In which of the following arrangements, the sequence is not strictly according to the property written against it ?

Options

A. `CO_2 lt SiO_2 lt SnO_2 lt PbO_2` : increasing oxidising power
B. HF lt HCl lt HBr lt HI : increasing acid strength
C. `NH_3 lt PH_3 lt AsH_3 lt SbH_3 ` : increasing basic strength
D. B lt C lt O lt N : increasing first ionization enthalpy

Answer

C

Explanation

`NH_3 lt PH_3 lt AsH_3 lt SbH_3`
It is decreasing basic strength and not increasing