How many electrons in an atom may have the following quantum numbers?

1.	How many electrons in an atom may have the following quantum numbers? (a) n = 4, = - 1/2 (b) n = 3, l = 0
Answer» ROM the QUESTION:a) The principle quantum number is n=4 The spin quantum number is = For n = 4, There are 4 orbitals possible, they are s, p, d and F s = 1; p=3; d=5; f= 7 Therefore, number of ELECTRONS can be = 1+3+5+7 =16 electronsb) Similarly, for principle quantum number n = 3 and Angular quantum number The orbital is 3s = 2 electrons

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