VSEPR - bond angles (2)

AXnEm designation ?

at CH3 carbon

at CN carbon

Define bond angles 1 and 2

Acetonitrile, CH3CN

Angle 1 = ?

Why ? :

The CH3 carbon is surrounded by 4 bond charges

The CN carbon is surrounded by 2 bond charges

Angle 2 = ?

AX4 = tetrahedral

AX2 = linear

109o

180o

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