Question

given the iupac name lead(ii) nitrate, what is the correct chemical formula for this ionic compound? (nitrate ion is no₃⁻)
pb(no₃)₂
pb₂(no₃)
pbno₃
pb₂(no₃)₃
when naming binary ionic compounds with metals that typically form only one type of ion, a roman numeral is always included in the name.
true
false

Explanation:

Step1: Determine lead ion charge

Lead(II) has a charge of +2, written as $Pb^{2+}$.

Step2: Determine nitrate ion charge

Nitrate ion is $NO_3^-$ with a charge of - 1.

Step3: Balance charges

To balance the +2 charge of lead and -1 charge of nitrate, we need 2 nitrate ions. So the formula is $Pb(NO_3)_2$.

For the second - part:
Roman numerals are used to indicate the charge of metals that can form multiple types of ions. For metals that form only one type of ion, Roman numerals are not included. So the statement is false.

Answer:

1. $Pb(NO_3)_2$
2. False