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7. Redox reactions — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry7. Redox reactions1 Mark
MCQ
The oxidation state shown by silicon when it combines with strongly electropositive metals is
  • A
    $-2$
  • ✓
    $-4$
  • C
    $+4$
  • D
    $-2$
✓

Answer

Correct option: B.
$-4$
(b) Silicon forms silicides with strongly electropositive metals (like $Na,\,Mg,\,K$ etc.) In these compounds. It has oxidation number $ = - 4$.

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