Question

Which of the following is an ionic compound?

A. H2O

B. CO2

C. CH4

D. PCl3

E. NaCl

Answer 1

Ionic compounds can usually be identified by the fact that their constituent elements come from opposite sides fo the periodic table.

Answer 2

Ionic bonds generally occur between a metal and non-metal... only one of these compounds is metal+non-metal.

Answer 3

Usually a column 1 or column 2 (metal) with Column 16 or column 17 (non-metal)

Answer 4

We are yet to see a precise definition =)

Answer 5

Never coumn 18 as those are the nobles gases and tend to not react or chemically combine with anything.

Answer 6

@genius12 That is because this is a learning/study site. It is designed to help people learn. If all they needed was a precise definition then they could look it up themselves.

Answer 7

Thanks a lot. So would NaCl be the correct answer?

Answer 8

Yes it would.

Answer 9

thanks!

Answer 10

@genius12 neither me or @Paynesdad was trying to give a precise definition, or even an imprecise definition. Why would we, for a question where it isn't needed, and may not even be helpful to the asker...?