Hybridisation of the nitrogen atom and electrons geometry around nitrogen atom in pyridine is
, pyramidal
, planar trigonal
, linear
, tetrahedral
The structure of pyridine is
You know we decide the hybridisation by steric number X.
X = no.of bond around nitrogen + lone pair on central atom
X = 2 + 1 = 3
Since, steric number is 3. Therefore, hybridisation is and geometry is triangular planar.
Hence, option number (2) is correct.
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