Linked Questions

16
votes
3answers
3k views

The impossibility of 100% ionic bond

Recently, I read the definition of oxidation state on Wikipedia. It read that a 100% ionic bond is impossible. So what does a 75% ionic and 25% covalent bond mean at all?
12
votes
3answers
36k views

Why isn't water an ionic compound?

If two alkali metal atoms join with an oxygen atom, an ionic bond forms. Since hydrogen has the same number of valence electrons as alkali metals, why can't water be ionic? This is what I'm thinking:...
7
votes
3answers
6k views

Is KHF2 an ionic compound or a covalent compound?

The statement below is an excerpt from my school textbook:- Because of the tendency of fluorine to form hydrogen bond, metal fluorides are solvated by $\ce{HF}$ giving species of the type $\ce{...
4
votes
2answers
3k views

Is PbO ionic compound?

In IIT-JAM 2018, There was one question, which one of the following oxides are ionic? There was one option PbO also. According to the official answer key, PbO isn't ionic. Although I know this ...
4
votes
2answers
10k views

BeF2 : covalent or ionic?

My textbook says despite large electronegativity difference it's covalent since beryllium ion will have too much charge density and it'll attract fluorine election cloud and therfore forms polar ...
38
votes
1answer
9k views

Can 100% covalent bonds exist?

Every covalent bond has some ionic character and every ionic bond some covalent character. I can understand why a completely ionic bond is an ideal situation. But completely covalent bonds can exist(?)...
7
votes
1answer
15k views

Is the bond in HF ionic while it is covalent in HCl?

Why would a hydrogen atom "donate" to fluorine in an ionic bond but not in $\ce{HCl}$? Why would $\ce{H}$ and chlorine share instead of $\ce{Cl}$ just stripping it away like $\ce{F}$ does?
4
votes
1answer
3k views

Is FeS2 both an ionic and covalent compound? [duplicate]

Iron (II) disulfide. Iron pyrite. Fool's gold to some. But what bond does it fall under? It could possibly be used for both? This would give a deeper understanding into other like examples, where ...
1
vote
1answer
126 views

Why does a carbocation undergo covalent bonding with, say, chloride, rather than ionic bonding, like what occurs between Na+ and Cl-?

I've been trying to look for an answer for a while but I can't find one. Why does a carbocation accept an electron pair from a nucleophile and form a covalent bond rather than just accepting one ...
1
vote
1answer
2k views

Why is the melting point of KBr higher than that of CsCl?

I thought that when compounds have similar forces and charges, the one with the higher molecular weight has the higher melting point. If that is true, then why is the melting point of $\ce{KBr}$ ...
0
votes
1answer
2k views

Ionic Character, on which factors do it depend [duplicate]

I was watching a lecture of chemistry teacher. He gave the following question: Q Arrange in terms of increasing ionic character: LiF,NaF,KF,RbF,CsF? My try: I tried two approaches: Approach 1: As F ...
-2
votes
1answer
42 views

I have a question regarding chemical bonds

can NaCl bond be called polar covalent bond? I understand that it's ionic bond but Na is still sharing its electron with Cl. I am confused with Ionic and polar covalent bond.
-2
votes
1answer
2k views

Covalent and Ionic bonds with Semi-metals

why are some semimetals considered as a metal, and some, a nonmetal when paired with some atoms. Like in BF, it is an ionic bond, but in SiCl, it is a covalent bond. Do their electronegativities ...
2
votes
0answers
1k views

Which has more ionic character, LiF or K2O?

After drawing the structures of both and considering dipole moment, doesn't it seems that all K2O should have more ionic character than LiF? My textbook says its LiF.