Multiple choice

In the fifteenth group of the periodic table, there is a considerable increase in the covalent radius from N to P, but from As to Bi, there is only a small increase. The reason is

  1. shielding effect

  2. completely filled d and f orbitals in heavier members

  3. ionisation energy

  4. electronegativity

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ans : 2.