Questions tagged [lewis-structure]

For questions about determining Lewis structures (or their validity) for different chemical species. Do not use this tag if your question is about determining [oxidation-state] or [formal-charges], use the other respective tags instead.

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How do a write the skeletal structure of the a transition metal complex in particular a BaIrO3 Perovskite? [closed]

I want to write down a 2d representation of the BaIrO3 Perovskite like I would with polyacetylene. I now people can draw these diagrams for transition metal complexes, but i don't really understand ...
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1answer
126 views

Can this sp2 lone pair resonate?

In methyl isocyanate, $\ce{CH3CNO}$, shown below, it seems that the nitrogen lone pair can resonate with the carbon oxygen double bond, generating a resonance structure something like acetonitrile ...
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1answer
27 views

Fastest way to determine if molecule has resonance structures [closed]

I came across this old exam problem: For which of the following choices, is every molecule a resonance hybrid with resonance structures? A. $\ce{SO2},$ $\ce{NH3},$ benzene B. $\ce{SO3^2-},$ $...
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Copper (II) acac: Lewis dot diagram

I know that this is the diagram of the acac anionic ligand. It's my understanding that because it is a bidentate ligand, both the oxygen atoms are involved in bonding but i'm confused as to how to the ...
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2answers
10k views

What is the correct structure of sodium thiosulfate?

Which structure of sodium thiosulfate is correct? One book says the second one (the one with co-ordinate bonds) and the other one says the first one? According to me the structure 2 is correct as in ...
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1answer
50 views

Can methanol act as a ligand? [closed]

As methanol is both a lewis acid and a lewis base, the lewis base part suggests that it can act as a ligand as many bases are. So, is methanol a ligand? And what is the reason behind it?
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What is the correct electron dot notation of carbon?

My book says that the dot notation for Lewis structure of carbon has 2 possible ways: two dots on the right, one on the top, one on the left one dot on all four sides Why are both of these correct? ...
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2answers
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Rules to identify the most stable resonance structures

While studying resonance from this Chemistry LibreTexts article, I found the rules to follow in order to decide which structure is the most stable. Among them: The structure with the least number of ...
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1answer
49 views

Why dosen't No2 form according to the octet rule?

Supposedly every atom that is in the second period of the periodic table has to obey the octet rule, this means that they have to be surrounded by 8 electrons (or so I was taught). Studying resonance ...
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1answer
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lewis structure of O3 [duplicate]

This is my first question, sorry if I don't know how to write a good question. why is O3 shaped like this?: and not shaped like each Oxygen molecule is connected to two other molecules? (i did not ...
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2answers
860 views

What is the correct lewis structure of SCH⁻?

I need to find the Lewis structure of the ion $\ce{SCH^-}$. I think the Lewis structure should be: $\ce{S=C-H}$, with one lone pair on the carbon and two lone pairs surrounding the sulfur. Is this ...
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1answer
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What is the correct Lewis structure of diazomethane?

I tried to google and watch YouTube videos on how to write Lewis structures properly, but I can't seem to understand how to do this correctly. My teacher, when class was in session, gave me a set of ...
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1answer
19k views

Why does Boron only need 6 valence electrons unlike the standard 8?

So I was a bit confused. Hydrogen and Boron seem to be the only outliers to the octet rule. Hydrogen makes sense because it has only one shell and 2 electrons complete its shell. Boron's configuration,...
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1answer
186 views

Preferred Lewis structure for sulphate anion and XeO4 [closed]

In a section reviewing Lewis structure, the textbook Atkins' Physical Chemistry, 10th Edition, by Atkins, Paula, and Keeler, gives the following illustration of hypervalence and octet expansion: I ...
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1answer
559 views

What is the Lewis structure of the azide ion?

On a chemistry homework, we're asked to draw the Lewis structure of $\ce{N3-}$. My answer: Nitrogen ordinarily has five electrons in its valence; $\ce{N-}$ has six. This makes a total of 16 ...
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Why are only two bond structures considered for ozone and not three? [duplicate]

We were taught in chemistry that: Formal charges can be determined by drawing the Lewis dot structure, then subtracting the nonbonding electrons and half of the bonding electrons from the number of ...
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2answers
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Lewis Structure of OF+

Would the Lewis Structure for OF+ be drawn so that the more electronegative atom has the more negative formal charge, or would it be drawn to satisfy the octet rule? Here are my thoughts thus far: ...
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1answer
71 views

Finding the central atom of N2O

Why do all structures of $\ce N_2\ce O$ have Nitrogen as their central atom? Can we not draw a lewis structure with Oxygen as the central atom with 2 double bonds to the two nitrogens? This will still ...
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Lewis Structures and electron distribution with oxygen atom

I am a novice in chemistry. I don’t understand the way Lewis structure and how electrons are shared between elements. For instance As we know, Oxygen has six valence electrons that means it has ...
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1answer
62 views

Drawing bicarbonate ion in different way [closed]

I don't know why can't I draw $\ce{[HCO3]-}$ like that: I tried to draw it like that and checked everything. I checked formal charge and all was good. Why they draw it OH I know its also alright but ...
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35 views

What is the Lewis dot structure for ozone? [duplicate]

Currently I studying about the Lewis dot structure for different compounds and my textbook says that the Lewis structure for ozone may be drawn as(as shown in the image): And then it goes on to ...
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1answer
468 views

Understanding the structure of NCS⁻

Predict the most preferable structure of $\ce{NCS-}.$ $$\Large\underset{(\textbf{1})}{\ce{(:\!\!\overset{\huge.\!\!.}{N}=C=\overset{\huge.\!\!.}{\underset{\huge.\!\!.}{S}})-}}\qquad\underset{(\...
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Lewis structure and bond order of polyiodides

I am trying to draw the lewis structure of triiodide, pentaiodide and heptaiodide-anions. But I am not sure about them, especially not about the heptaiodide-anion (see image). The second question is,...
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1answer
315 views

Provide a condensed structure for the following compound [closed]

I keep getting, (CH3)3CCH2CH2CHNH2CHCHCH3. However, the homework system keeps counting it as incorrect, and I don't know what part is incorrect. Thanks for the help!
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What will be the Lewis acid and Lewis base in the reactions between aluminium(III) aqua complex and hydroxide?

$\ce{Al^3+}$ in water will be hydrated, formed a complex ion $\ce{[Al(H2O)6]^3+(aq)}$ that can neutralize hydroxide ion according to the following reactions: $$ \begin{align} \ce{[Al(H2O)6]^3+ + ...
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Is bonds in CO is all 3 coordinate bonds or 2 covalent and 1 coordinate bonds?

Below image is as available in India's Class 11 NCERT Chemistry book vol 1 Page 104. I am confused as it states all 3 bonds are kind of coordinate bonds. Should it not start with 2 covalent bonds and ...
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1answer
239 views

Electrons distribution of oxygen atoms in ozone [closed]

While dealing with the Lewis structure for ozone, most of the explanations show the electron distribution around the 3 oxygen atoms with a single and double bond. But if you count the number of ...
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0answers
96 views

Lewis dot structures of carbonate, nitrate and phosphate anions

According to the Lewis dot structure, which of the following anions has more than 4 bond pairs around the central atom? 1) carbonate anion 2) nitrate anion 3) phosphate anion 4) none of ...
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Formal charge: size vs electronegativity?

My question is why size is not taken into consideration when deciding major contributors of resonance structures, particularly: why is the formal charge always assigned to the most electronegative ...
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0answers
45 views

Lewis structure of chlorine dioxide [duplicate]

The central atom in the molecule of $\ce{ClO2}$ is chlorine. Draw the ‘dot-and-cross’ diagram for $\ce{ClO2}.$ Show outer electrons only. How to draw Lewis structure of $\ce{ClO2}?$ Please explain ...
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2answers
139 views

Bonding in the nitrate anion [duplicate]

Hi so I was studying chemical bonding where i encountered a problem which is stated below. When we talk about ${NO_3}^-$ we draw its structure as following But the thing which I dont understand is ...
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1answer
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Order of dipole moments

What is the order of dipole moments for $\ce{SO3, SiO2, P2O5,}$ and $\ce{Cl2O7}$? This question is from a book and the answer given is $\ce{Cl2O7 < SO3 < P2O5 < SiO2}$. Can someone explain ...
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2answers
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Lewis structure of CN radical

I need to draw the Lewis formula for $\ce{CN}$. However, I am not sure how to draw the single free electron. My idea would be as follows: $$\Large\ce{\llap{·}C#N\rlap{:}}$$ Does that make sense?
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5answers
11k views

Structure of NO2 compound?

What is the correct structure for the $\ce{NO2}$ compound (not ion)? I always thought it was like: since the negative charge would be residing the on the highly electronegative oxygen, but was ...
10
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2answers
655 views

What is the structural formula of alkali hypohalite: MOX or MXO?

Recently I came across this question and in the comment section, there was an argument regarding the formula of sodium hypoiodite which kept me wandering: what is the actual formula of alkali ...
2
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1answer
124 views

Bond angle and bond lengths in Arginine

Based on the Lewis structure of arginine, the terminal primary amine attached to the guanidine group seems to be $\mathrm{sp^3}$ hybridized and trigonal pyramidal. Also, in quantum mechanical ...
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1answer
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Why is the Chlorine missing an electron in Chlorine Monoxide?

I was asked to draw the lewis-dot structure for ClO and I drew this: .. .. :Cl- O. .. .. The correct answer is apparently this: ...
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3answers
307 views

Why is the structure of HNO3 have a central atom rather than being linear?

Why is the structure of $\ce{HNO3}$ have a central atom rather than being linear? I know formal charges need to be reduced as much as possible, and if there was a structure with two oxygens and a ...
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1answer
432 views

In the Lewis structure for barium fluoride, why does barium lose its valence electrons?

I searched for $\ce{BaF2}$ Lewis structure, and found out that the Barium atom loses its 2 valence electrons to form $\ce{F- Ba^2+F-}$. Before seeing it I thought each of $\ce{Ba}$'s valence ...
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1answer
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Are the Phosphate and Sulfate ion diagrams with double bonds an invalid picture?

Whenever you see an image of phosphate, it's always shown having 5 bonds. 3 single bonds to anionic oxygen atoms and a double bond to an extra neutral oxygen. Not only that, but they're shown being ...
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2answers
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Structure of N2O2

I've drawn a structure of $\ce{N2O2}$ like this: $$\ce{:\overset{\large.\!\!.}{\underset{\large.\!\!.}{O}}-N#N-\overset{\large.\!\!.}{\underset{\large.\!\!.}{O}}:}$$ I don't know if it's possible. ...
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1answer
183 views

Is it possible to use the school supplied algorithm to build the Lewis diagram of the iodate ion?

I am upgrading the grade 12 chemistry credit and have to use the school supplied algorithm to build the Lewis diagram of $\ce{IO3-}$ ion. It seems to me that iodine oxidation state in this ion should ...
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0answers
698 views

Why isn't O=N-O-O the best lewis structure for NO3-?

I'm practicing lewis structures and I'm stuck on the one for NO3 -1 (nitrate ion). I understand that N has to be the central atom because it is the least electronegative, but I'm confused why all the ...
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1answer
168 views

Lewis structure of benzenediazonium [closed]

In the benzenediazonium $\ce{C6H5N2+}$ the nitrogen contributes its lone pair to the carbon in benzene. So where is one electron of that carbon, since it is not used for bonding with nitrogen where ...
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1answer
167 views

How to use Lewis theory to differentiate between an acid and a base?

According to Lewis theory a material is an acid if it accepts an electron pair, and a material is base if it donates an electron pair. But if we compare the structures of $\ce{HNO3}$ and $\ce{NaOH}$, ...
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1answer
1k views

Do atoms react to fill outer shell or 8 valence electrons? [duplicate]

I recall in middleshool chemistry we simply said electron shell configurations were 2,8,8,many which I would have no problems with. But now I'm learning that shells contain $2n^2$ electrons where n ...
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51 views

How can nitrogen be quadruply bonded in tris(8-hydroxyquinoloinato)aluminum?

Nitrogen typically has five outer valence electrons. So how does a triply-bonded nitrogen in 8-hydroxyquinoline end up quadruply bonded in tris(8-hydroxyquinolinato)aluminum?
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303 views

Can the Lewis dot structure of SO2 be experimentally verified?

I have just watched 2 different videos on the Lewis dot structure of sulfur dioxide, $\ce{SO2}$. One says it is $$\ce{O=S=O}$$ and the other says $$\ce{^-O-S^+=O <-> O=S^+-O-}$$ The first ...
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1answer
2k views

Why (SO4)^2- does not create 4 double bonds

I looked this question up and still couldn't understand. Why, in $\ce{SO4^2-}$ don't the 4 oxygens create double bonds. In that case the all the oxygens will have 0 formal charge while the sulfur ...
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4answers
2k views

Structure of pyrophosphorous acid

What is the structure of pyrophosphorous acid? I asked this question here because the answer which I found on web and other resources are inconsistent which each other. For example, following data is ...