To calculate the formal charge of the nitrogen N atom in ammonia NH , we can use the formula:Formal charge = Valence electrons of the atom - Non-bonding electrons - 0.5 * Bonding electrons For nitrogen N in ammonia NH :1. Valence electrons of nitrogen N = 5 since nitrogen is in group 15 of the periodic table 2. Non-bonding electrons = 2 there is one lone pair on nitrogen 3. Bonding electrons = 6 since there are three N-H bonds, and each bond has 2 electrons Now, we can plug these values into the formula:Formal charge of N = 5 - 2 - 0.5 * 6Formal charge of N = 5 - 2 - 3Formal charge of N = 0So, the formal charge of the nitrogen N atom in the ammonia NH molecule is 0.