Question

what is the formula for this compound?
□ cu₆(no₃)₆
□ cu(no₃)₂
□ cu₂(no₃)₃
□ cu no₃

Explanation:

Step1: Determine copper and nitrate charges

Copper(II) has a charge of +2 ($Cu^{2 +}$), and nitrate ion ($NO_3^-$) has a charge of - 1.

Step2: Balance charges

To balance the charges, we need 2 nitrate ions for every 1 copper ion. So the formula is $Cu(NO_3)_2$.

Answer:

$Cu(NO_3)_2$