Which of the following elements does not form hydride by direct heating with hydrogen? 

  • Option 1)

    Be

  • Option 2)

    Mg

  • Option 3)

    Sr

  • Option 4)

    Ba

 

Answers (1)

As we learnt in 

Hydrite of beryllium -

Prepared indirectly by reducing beryllium chloride with lithium aluminium hydride

- wherein

2BeCl_{2}+Li[AlH_{4}]\rightarrow 2BeH_{2}+LiCl+AlCl_{3}

 

Beryllium does not form hydrides by direct heating. It is prepared by reducing Beryllium Chloride with Lithium Aluminium Hydride.

2BeCl+ Li(AIH4\rightarrow2BeH+ LiCl + AlCl3


Option 1)

Be

This option is correct

Option 2)

Mg

This option is incorrect

Option 3)

Sr

This option is incorrect

Option 4)

Ba

This option is incorrect

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