A molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge.

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Why does $\ce{NaCl}$ ionize in $\ce{H2O}$ despite its strong ionic bond? [duplicate]

If $\ce{NaCl}$ is such a strongly bonded ionic compound, why it does it disassociate so readily in $\ce{H2O}$? One would think that because of the very strong ionic bond it would not disassociate it ...
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78 views

How do i find out which species is colourless? [closed]

Among the following $$\ce{TiF6^{2-},\ CoF6^{3-},\ NiCl4^{2-},\ CuCl2}$$ how do i find the species which i colorless If possible please provide the concept used to deduce the result it will be very ...
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292 views

The Crisscross method for finding the chemical formula

I am reading this wikipedia article that I don't understand. What I don't understand is: suppose we have two elements $X$ and $Y$ having oxidation numbers $x$ and $y$ respectively. Can we prove ...
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39 views

How would one compare the magnitude of covalent character between SnCl4 and SnF2 using Fajan's Rules?

It is easy to compare two ionic compounds when one of the ions is same. However, how do we compare two compounds if one of the ions is the same element but just has different charge and the other ion ...
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48 views

Ionic Strength of 0.1M of HEPES?

HEPES, the buffer, has the chemical formula $\ce{C8H18N2O4S}$. Using the Ionic Strength formula from Wikipedia. I have calculated that $0.1M$ of HEPES would have a strength of $1.7M$, would it be ...
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Is pyrite (FeS2) an ionic or a covalent compound?

I have searched all over the web and found a lot of diverse explanations, but none of them are concluding exactly whether $\ce{FeS2}$ (solid - pyrite) is a covalent or an ionic compound. From ...
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Reaction between Zinc and Sulfur

Would the reaction between zinc and sulfur be $$\ce{Zn_{(s)} + S_{(s)} -> ZnS_{(s)}}$$ or $$\ce{8 Zn_{(s)} + S_8\ _{(s)} -> 8ZnS_{(s)}}$$ I know that $\ce{S}$ and $\ce{S8}$ are allotropes of ...
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Chemical Bonding

A Covalent bond involves overlapping of orbitals while an Ionic bond involves charge separation. Why is overlapping of orbitals less stronger than charge separation,i.e., why is an Ionic bond stronger ...
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51 views

Why are cations ordinarily smaller than anions?

I'm reading on ionic crystal structures and am confused by this from my textbook: Because the metallic elements give up electrons when ionized, cations are ordinarily smaller than anions I ...
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73 views

Ionic or covalent bond

Which bond is stronger, ionic or covalent? I have a lot of confusion about this.
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How to identify ionic compounds

I have a Chemistry lab in which I must design and carry out an experiment to determine the compound in each of eight numbered vials. Each vial contains one of these ionic compounds: BaCl2 CaCO3 ...
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187 views

Why do ionic compounds dissociate whereas coordinate complex's won't?

An ionic bond is the bonding between a non-metal and a metal, that occurs when charged atoms (ions) attract after one loses one or more of its electrons,and gives it to the other molecule, for ...
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How did Halogens become known as Halogens? They are not the only elements that form salts!

Having never given it a though before, I recently discovered (in a different context) that the prefix halo- actually means 'salt' or 'sea' and the suffix -gen means 'to form' or 'to generate'. So the ...
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2answers
126 views

How are pure substances (elements, compounds, etc) produced?

How are large quantities of the substances we use in the lab generally produced? (As in the process from getting the stuff out of the ground to use in the lab) How 'pure' are they? Also: is it ...
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Why is the melting/boiling point of ionic bond higher than covalent bond?

As the title says, why is the melting and boiling point of ionic bond usually higher than covalent bond? I know that compounds with ionic bonds are usually solid at room temperature, so I want other ...
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34 views

Acid-Base Reactions

I am getting confused about this the more problems I do on it. My understanding was that only strong acids and strong bases will react to produce water and a salt. Something like this: Molecular Eq: ...
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1answer
384 views

valence electrons in azide ion

We had a test and and we had a question asking the number of Valence electrons in an azide ion((N3)- ). I find out that the answer is 16 but I could not understand how. I saw the structure. It ...
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Is there a word for a compound that has both ionic and covalent bonds?

For example, calcium carbide (CaC$_2$) has covalent C‒C bonds and ionic Ca$^{2+}$‒ C$_2^{2-}$ bonds.
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501 views

Coordination number of CsCl (high school chemistry)

Question: Suggest an explanation for the coordination number in the $\ce{CsCl}$ lattice being different from those in $\ce{NaCl}$. Standard answer: Caesium ion is larger than sodium ion, ...
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If Copper has 2 valance electrons and Sulfide 6, Why dont they bind in pairs?

Simple question, the average neutral copper atom has 2 valance electrons, and Sulfide 6. Wouldn't the two electrons jump from copper and bind to sulfide? The empirical formula is : $\ce{Cu + S -> ...
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395 views

Will gaseous ionic compounds be free moving ions?

I knew while learning about electrolysis that if the ionic compound is molten it becomes free moving ions. If that is the case, what will happen if I continued heating till it reaches the boiling ...
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Separating NaClO from its aqueous form in bleach

I was wondering, can I separate the NaClO from the H2O in bleach. The decomposition point for NaClO is 374.14 K, so I'm risking decomposing the compound if I do simple distillation. What should I do? ...
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How to determine stable electron states in ionic and covalent bonds?

I'm working on a program that needs to determine if a bond between two or more elements will result in a stable state. I understand at a high-level how to fill electron subshells using the Aufbau ...
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183 views

What is the correct name for this lab technique [crystallization]

Take a glass rod and rub vigorously the wall of the flask, the substance will crystallize out of the solution. Take a fire polished stirring rod and etch (scratch) the glass of your beaker. The small ...
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Why do Magnesium and Lithium form *covalent* organometallic compounds?

Lithium and magnesium are Group 1 and Group 2 elements respectively. Elements of these groups are highly ionic, and I've never heard of them forming significantly covalent inorganic compounds. Yet ...
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Are there any ionic amorphous solids?

This question on NaCl crystalization actually got me wondering: are there any ionic amorphous solids? Like ionic crystals are crystalline materials of electrostatically-attracted ions, can ions form ...