Determine the formal charge on each atom in the structure.

Question

Determine the formal charge on each atom in the structure.

Answer Bank: -4,-3,-2,-1,0,1,2,3,4

H

H B H

H

Answer 1

After drawing the Lewis structure, we will see that boron (B) has single bonds to 4 hydrogens (H).

Thus, formal charge on B = -1

Formal charge on each H = 0

Overall charge = -1 and structure should be written as [BH₄]^-