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
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Answer:
Option (D) is the correct answer
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Explanation:
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✔️
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