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NEET2008Chemistrys Block ElementsActual

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

Options

  1. ALiH > NaH > KH > RbH > CsH
  2. BCsH > RbH > KH > NaH > LiH
  3. CKH > NaH > LiH > CsH > RbH
  4. DNaH > LiH > KH > RbH > CsH

Correct answer

A. LiH > NaH > KH > RbH > CsH

Step-by-step solution

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