Find out number of transformation among following which involves the change of hybridisation of underlined atom.
(a) `H_(2)underline(O)+H^(+) to H_(3)underline(O)^(+) " " (b) NH_(3)+underline(B)F_(3) to NH_(3). Underline(B)F_(3)`
(c ) `underline(X)eF_(6) to underline(X)eF_(5)^(+)+F^(-) " " (d) 2underline(P) Cl_(5) to underline(P)Cl_(4)^+)+PCl_(6)^(-)`
(e ) ` underline(C )H_(3)-CH_(3) to underline(C )H_(3)^(-)+CH_(3)^(+)`

Answer

3

Explanation

Transformations (b), (c ) and (d) involve change in hybridisation.