In which of the following pairs, both the hydrides are not of the same type?
A
LaH3.TiH2
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B
CH4,H2S
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C
NaH,CaH2
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D
BaH2,SiH4
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Solution
The correct option is CNaH,CaH2
BeH2 is a saline hydride (salt-like) as it contains the H^- ion.
SiH4 is a molecular hydrogen compounds. Calling it hydride is probably incorrect. SiH4 is called silane and is a spontaneously flammable gas. It has no base properties.