Which of the following has least covalent P-H bond?

Question

Which of the following has least covalent P-H bond? (A)  PH3  (B)  P2H6  (C)  P2H5  (D)  PH6+

Tardigrade Admin · Accepted Answer

Due to the presence of positive charge on P it attracts the electrons of the P-H bond towards itself. Consequently, the bond has some ionic character. In other words, the P-H bond in PH0+ is least covalent.

Q. Which of the following has least covalent $P - H$ bond?

$P H_{3}$

$P_{2} H_{6}$

$P_{2} H_{5}$

$P H_{6}^{+}$

Due to the presence of positive charge on P it attracts the electrons of the $P - H$ bond towards itself. Consequently, the bond has some ionic character. In other words, the $P - H$ bond in $P H_{0}^{+}$ is least covalent.

Q. Which of the following has least covalent P−H bond?

PH3​

P2​H6​

P2​H5​

PH6+​