question_answer

Among the compounds, \[B{{F}_{3}},NC{{l}_{3}},{{H}_{2}}S,S{{F}_{4}}\]and \[BeC{{l}_{2}}\], identify the ones in which the central atom has the same type of hybridisation                                               [Kerala PMT 2004]

A)                 \[B{{F}_{3}}\] and \[NC{{l}_{3}}\]             

B)                 \[{{H}_{2}}S\]and \[BeC{{l}_{2}}\]

C)                 \[B{{F}_{3}},NC{{l}_{3}}\]and \[{{H}_{2}}S\]        

D)                 \[S{{F}_{4}}\]and \[BeC{{l}_{2}}\]

E)                 \[NC{{l}_{3}}\] and \[{{H}_{2}}S\]

Correct Answer: E

Solution :

                In \[NC{{l}_{3}}\] and \[{{H}_{2}}S\] the central atom of both (N and S) are in \[s{{p}^{3}}\]hybridization state while in \[B{{F}_{3}}\] and \[NC{{l}_{3}}\] central atoms are in \[s{{p}^{2}}\] and \[s{{p}^{3}}\]hybridization respectively. In \[{{H}_{2}}S\] and \[BeC{{l}_{2}}\] central atom are in \[s{{p}^{3}}\]and \[s{{p}^{2}}\] hybridization In \[B{{F}_{3}},\,NC{{l}_{3}}\] & \[{{H}_{2}}S\] central atom are in \[s{{p}^{2}}\], \[s{{p}^{3}}\] & \[s{{p}^{3}}\] hybridization and in the central atom are in \[s{{p}^{3}}\]and \[sp\]hybridization.