Question 99 of 99

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