Question

what is the nature of hydrides and chloride in s block element?

Answer 1

s-block elements are the elements found in Group 1 and Group 2 on the periodic table. Group 1 are the alkali metals which have one valence electron. They have low ionization energies which makes them very reactive. Group 2 is the alkali earth metals which have two valence electrons, filling their s sublevel

Answer 2

→Hydrides of s-block are ionic and saline with high melting points.
The only element that does not form hydrides on direct combination with hydrogen is beryllium.

→Halides of s-block are ionic, high melting, colourless, crystalline solids.
The only exception in halides is that beryllium halides are covalent rather than ionic.