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Question
Which of the following elements does not form hydride by direct heating with dihydrogen?
Which of the following elements does not form hydride by direct heating with dihydrogen?
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Solution
The correct option is D Be
Solution:
All the elements except beryllium in alkaline earth metals, combine with hydrogen upon heating to form their hydrides, MH2 . It occurs beryllium has a small atomic size and has a high ionisation enthalpy. Due to this, it does not react to direct heating with dihydrogen.
Hence, the correct answer is option (A).
Solution:
All the elements except beryllium in alkaline earth metals, combine with hydrogen upon heating to form their hydrides, MH2 . It occurs beryllium has a small atomic size and has a high ionisation enthalpy. Due to this, it does not react to direct heating with dihydrogen.
Hence, the correct answer is option (A).
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