What is the formal charge on the nitrogen in NH4+ (ammonium)?(Submit all positive answers as a number with no positive sign. +2 would be submitted as 2)QUESTION 3 What is the formal charge on the nitrogen in NH4+ (ammonium)? (Submit all positive answers as a number with no positive sign. +2 would be submitted as 2) QUESTION 4 What is the molecular geometry of H20?A A. linear AI B. bent A C. trigonal planar A D. tetrahedron.