MCQ
The decrease in atomic volume from $Cr$ to $Cu$ is very negligible because
- AIncrease in nuclear change
- ✓Screening effect
- CUnpaired electrons of $Cr$
- DNone
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Assertion $(A)$ : Haloalkanes react with $\mathrm{KCN}$ to form alkyl cyanides as a main product while with $\mathrm{AgCN}$ form isocyanide as the main product.
Reason $(R)$ : $\mathrm{KCN}$ and $\mathrm{AgCN}$ both are highly ionic compounds.
In the light of the above statement, choose the most appropriate answer from the options given below: