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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