1) NO, N is a central atom. a) Write acceptable Lewis structures for NO, b) Assign formal charges to the atoms in the Lewis structures for NO, c) Trough appropriate Lewis structures, show the resonance structures for NO, d) Determine the electron group geometry according to VSEPR for NO e) Determine the molecular group geometry according to VSEPR for NO, f) Determine the point group of NO; g) Show all the symmetry elements of NO, h) Determine the polarity properties of NO, i) Has NO, molecule optical activity properties? ;) Show the irreducible representations and related orbitals which involve in o and bonding of NO, . k) Draw molecular orbital diagram of NO,, show bond order and HOMO-LUMO orbitals (7N, O; Nen: 3,0; O.: 3,5) 2) H2CO, C is a central atom. 3) BHA, B is a central atom