To know that compare the electronegativitis of the two elements.
The electronegativity of H is 2.2
The electronegativity of Br is 2.96
The difference does not seem enough to cause ionic bond. Then it is most likely thaty they form a polar covalent bond.
Removing chloride ion is the reaction away
The net ionic equations in
the creation of solid Hg2Cl2 and aqueous Sodium Nitrate (NaNO3) would be:
Hg2(NO3)2 + 2 NaCl
--------> Hg2Cl2 + 2 NaNO3 <span>
Hg2+2 + 2NO3-1 + 2Na+ Cl- ----> Hg2Cl2 + 2Na+ + 2NO3-1
<span>Hg2+2 + 2Cl-1 ------------> Hg2Cl2</span></span>