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$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The addition of limited amount of water breaks the lump of lime. This process is called :
Which of the following undergoes nitration fast?
Which of the following order is correct for the property mentioned in brackets ?
Which of the following is correct when decrease in entropy has been taken place?
Arrange the following in order of their leaving group tendency?
→$(I)\,\,B{r^ - }{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} $ $(II)\,\,\begin{array}{*{20}{c}}
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} O{\mkern 1mu} } \\
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} ||} \\
{{H_3}C - C - {O^ - }}
\end{array}$ $(III)\,\,C{H_3}C{H_2}{O^ - }$ $(IV)\,\,Ph - {O^ - }$
Which has weakest bond
In the metallurgy of aluminium, cryolite is mixed in the molten state because it
Which of the following statement is wrong
The major product formed in the following reaction is:
A solution is prepared by adding $2g$ of substance $A$ to $1g$ of water. The mass percent of the solute is :
→