Question

The screening effect of $d$ electrons is:

• A. much less than $s$-electrons
• B. much more than $s$-electrons
• C. equal to $s$-electrons
• D. equal to $p$-electrons

Answer 1

The correct option is A much less than $s$-electrons

Screening effect order of orbitals is : $s>p>d>f$ . Thus screening effect of $d$ electrons is much less than $s$ electrons.