The compound(s) that does(do) not exist is (are)

Question

The compound(s) that does(do) not exist is (are) (A) BiF5 (B) PF5 (C) AsF5 (D) SbF5

Tardigrade Admin · Accepted Answer

All the given compounds i.e., BiF 5, PF 5, AsF 5 and SbF 5 exist. Only nitrogen is not able to form pentahalides because the second shell contains a maximum of eight electrons i.e., four bonds. The subsequent elements have suitable d -orbitals and form s -pentahalides.

Q. The compound(s) that does(do) not exist is (are)

$B i F_{5}$

$P F_{5}$

$A s F_{5}$

$S b F_{5}$

All the compounds exist

All the given compounds i.e., $B i F_{5}, P F_{5}, A s F_{5}$ and $S b F_{5}$ exist. Only nitrogen is not able to form pentahalides because the second shell contains a maximum of eight electrons i.e., four bonds. The subsequent elements have suitable $d$ -orbitals and form $s$ -pentahalides.

Q. The compound(s) that does(do) not exist is (are)

BiF5​

PF5​

AsF5​

SbF5​