Question

The number of atomic orbitals from the following having 5 radial nodes is ____. 7s, 7p, 6s, 8p, 8d

Answer 1

Correct answer is (3)

Radial node = n – l –1 

7s ⇒ R.N = 7 – 0 – 1 = 6 

7p ⇒ R.N = 7 – 1 – 1 = 5 

6s ⇒ R.N = 6 – 0 – 1 = 5 

8p ⇒ R.N = 8 – 1 – 1 = 6 

8d ⇒ R.N = 8 – 2 – 1 = 5 

So, Answer is 3