Multiple choice

The ionic radii of B3+, Al3+ Si4+ and N3- varies in the order of

  1. N3- > Al3+ > B3+ > Si4+

  2. N3- > B3+ > Si4+ > Al3+

  3. N3- > B3+ > Al3+ > Si4+

  4. N3- > Al3+ > Si4+ > B3+

  5. Al3+ > B3+ > Si4+ > N3-

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

The ionic radii of B3+ = 27 pm, Al3+ = 53.5 pm, Si4+ = 40 pm and N3- = 171 pm. Hence, the ionic radii of B3+, Al3+, Si4+ and N3- varies in the order of N3- > Al3+ > Si4+ > B3+.