question_answer

\[Cl-P-Cl\] bond angles in PCIs molecule are

A)  \[{{120}^{o}}\] and \[{{90}^{o}}\]   

B)  \[{{60}^{o}}\] and \[{{90}^{o}}\]

C)  \[{{60}^{o}}\] and \[{{120}^{o}}\]   

D)  \[{{120}^{o}}\] and \[{{30}^{o}}\]

Correct Answer: A

Solution :

 \[Cl-P-Cl\]bond angles in \[PC{{l}_{5}}\] molecule are \[{{120}^{o}}\] and \[{{90}^{o}}\].\[PC{{l}_{5}}\]  having \[s{{p}^{3}}d\] hybridised P atom (trigonal bipyramidal geometry) has two types of bonds; axial and equatorial. These two types of bond have different bond lengths 1, 2, 3 - equatorial bonds and 4, 5 axial bonds c