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:Cl: Cl: + 3.39 There are a total of three electrons in the two MOs of the HeH molecule, two electrons in the bonding MO and one in the antibonding MO. The molecule is predicted to be E more stable than the separate atoms on the basis of this simple picture. HeH 1 3.40 Nitrogen 1 is sp² hybridized and its 3 unshared pair of electrons is in an sp² : N NH₂ nonbonding AO. Nitrogen 2 is also sp² hybridized, but its "unshared" pair of 2 N electrons is in a p orbital and is part of the conjugated pi system. Nitrogen 3 is H sp³ hybridized and its unshared pair of electrons is in an sp³ nonbonding AO. 3.41 The cation has three resonance structures that contribute about equally to the resonance hybrid because they are similar in stability. + NH₂ NH₂ NH₂ H₂N-C=NH-R 45