Question
Question: Few electrons have following quantum numbers, (i) n = 4, l = 1 (ii) n = 4, l =0 (iii) n = 3, l = 2...
Few electrons have following quantum numbers,
(i) n = 4, l = 1 (ii) n = 4, l =0
(iii) n = 3, l = 2 (iv) n = 3, l – 1
Arrange them in the order of increasing enrgy from lowest to highest.
A
(iv) < (ii)<(iii) <(i)
B
(ii)<(iv)<(i)<(iii)
C
(i)< (iii)< (ii)< (iv)
D
(iii)<(i)< (iv)<(ii)
Answer
(iv) < (ii)<(iii) <(i)
Explanation
Solution
: (i) 4p, (ii) 4s, (iii) 3d, (iv) 3p
The order of increasing energy,
(iv)< (ii)< (iii)< (i)