Mercury $($I$)$ nitrate should have the formula $HgN{O}_3,$ but spectroscopic and freezing point depression studies indicate $($and it is now accepted$)$ that in fact the formula is $H{g}_2(N{O}_3{)}_2($because the mercury $(I)$ ion is a diatomic ion, $H{g}_2^{2+}).$ What value for i would you expect for a $1m$ solution based on the formula $HgN{O}_3?$ What would be the i value for $H{g}_2(N{O}_3{)}_2?$

$HgN{O}_3,i=$

$H{g}_2(N{O}_3{)}_2,i=$