Question

Increasing order of basic strength nh3,ph3,ash3,sbh3,bih3

Answer 1

NH3> PH3> AsH3> SbH3> BiH3

Answer 2

Hi there,

Answer: BiH3<SbH3<AsH3<PH3<NH3

NH3 is the most basic compound.

#Explanation

The nitrogen atom is more electronegative means it has the strength to attract a bonding pair of electrons toward itself. The size of a central atom of nitrogen is smaller than other given compounds. Increase in electron density of NH3 will increase the basicity.

BiH3 is the least base because the size of a central atom of BiH3 is much larger than nitrogen which decreases its basicity.

Hope it helped.