Materials and Components - Engineering

Q1:

For a given value (n) of principle quantum number, the number of possible electronic states are

A n

B n2

C n3

D
n

ANS:B - n2

The total number of states corresponding to a given value of n is equal to (2l + 1) = 1 + 3 + .... + [2(n-1) + 1] = n2.