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Hydrogen — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrogen1 Mark
MCQ
Elements of which of the following groups do not form hydrides?
  • A
    $1, 2, 3$
  • B
    $3, 4, 5$
  • ✓
    $7, 8, 9$
  • D
    $6, 7, 8$
✓

Answer

Correct option: C.
$7, 8, 9$
The region of the periodic table from the group $7$ to $9$ is referred to as the hydride gap as they do not form hydrides.
Examples of such elements are $Mn, Fe, Co, Ru$ etc. These elements do not form hydrides on account of low affinity for hydrogen in their normal oxidation states.

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