1.

The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

A. \[CsH>RbH>KH>NaH>LiH\]
B. \[KH>NaH>LiH>CsH>RbH\]
C. \[NaH>LiH>KH>RbH>CsH\]
D. \[LiH>NaH>KH>RbH>CsH\]
Answer» E.


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