Question

1. [7 points] Quantum numbers, n, I and my were discussed in class. (a) For n= 3, list all possible values of l. Answer: (b) For n= 3, list all possible values of mı. Answer: (c) List all the subshells in the n= 4 shell. Answer: (d) How many orbitals are present in the 4f subshell? Answer: (e) For the 3p subshell, what are the values for n and I? Answer: n= and I= (f) How many orbitals are present in the n= 3 shell? Answer:

Answer 1

(a) Possible values of e 2,10 (6) Possible values y me are -2,-1, 0, +1, +2 (6) n = 4 I = 0, 1, 2 , 3 subshells are sip, d, f (d) For uf orbital u=3 Total orbitals = 2l+1 2(3) + 1 = 7 (e) n=3 and 1=1 (f) 5 orbitals for n=3 e=2 l=1 l=0 d-subshell p-subshell s-subshell 3 orbitals I orbital - Total orbitale = 9

Designation of an electron in an orbital Principal quantum no. (n): It is a positive integer with values of n=1, 2, 3, .... Azimuthal quantum no. (1): It is an integer having all values between 0 to n-1 Magnetic quantum no. (mi): It is an integer having values from-1 to +1 including Spin quantum no. (m): This quantum no. can have values +1/2 or-1/2 Pauli Exclusion principle No two electrons in an atom can have the same set of all the four quantum no's.