Among \[Ca{{H}_{2}},N{{H}_{2}},NaH\] and \[{{B}_{2}}{{H}_{6}}\] which – McqOptions

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1.	Among \[Ca{{H}_{2}},N{{H}_{2}},NaH\] and \[{{B}_{2}}{{H}_{6}}\] which are covalent hydrides?
A.	\[N{{H}_{3}}\] and \[{{B}_{2}}{{H}_{6}}\]
B.	\[NaH\] and \[Ca{{H}_{2}}\]
C.	\[NaH\] and \[N{{\text{H}}_{3}}\]
D.	\[Ca{{H}_{2}}\] and \[{{B}_{2}}{{H}_{6}}\]
Answer» B. \[NaH\] and \[Ca{{H}_{2}}\]

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