why is alkali metal paramagnetic in nature and their salts not show this reason
All the alkali metals are paramagnetic because of the presence of one valence electron in the valence shell. The alkali metal cations i.e. Li+, Na+, K+, Rb+ and Cs+ all are diamagnetic because of absence of unpaired electrons. Therefore, their salts do not show paramagnetic property.
You have rated this answer /10