Dihydrogen, under certain reaction conditions, combines with almost all elements, except noble gases, to form binary compounds, called hydrides. If 'E' is the symbol of an element, then hydride can be expressed as EH_x (e.g.HgH_2)or E H_x (e.g. B_2H_6) . The hydrides are classified into three categories : ionic, covalent and metalicAmong CaH_2, NH_3, NaH and B_2H_6 , which are covalent hybrides ?

Dihydrogen, under certain reaction conditions, combines with almost al

1.	Dihydrogen, under certain reaction conditions, combines with almost all elements, except noble gases, to form binary compounds, called hydrides. If 'E' is the symbol of an element, then hydride can be expressed as EH_x (e.g.HgH_2)or E H_x (e.g. B_2H_6) . The hydrides are classified into three categories : ionic, covalent and metalicAmong CaH_2, NH_3, NaH and B_2H_6 , which are covalent hybrides ?
Answer» `NH_3` and `B_2H_6` NAH and `CaH_2` NaH and `NH_3` `CaH_2` and `B_2H_6` ANSWER :A