Is there a technique to determine the chemical formula of an ionic compound?

Answer 1

Yes. The technique is called the crisscross rule. The number (size) of the charge on one ion becomes the subscript for the other ion.

Your example:

#"Na"^(+)# + #"O"^(2-)##rarr##"Na"_2"O"#

Another example:

#"Fe"^(3+)# + #"O"^(2-)##rarr##"Fe"_2"O"_3"#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Wyatt Atkins

Yes, the technique to determine the chemical formula of an ionic compound involves balancing the charges of the ions. By knowing the charges of the ions involved, you can determine the ratio of ions needed to balance the overall charge of the compound.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.