Which hybrid orbitals would be formed if one s orbital and three p orbitals combined?

The answer is c. 320 g

U whay do you need with?

(no3)⁻n has oxidation number x,o has oxidation number -2.(x*1 -2*3) charge of the nitrate ion, and we know that charge of the nitrate ion =-1.so,(x*1 -2*3) =-1x-6=-1x=+5answer a. +5.