Question

What is the maximum number of electron in an atom that can have the following quantum...

What is the maximum number of electron in an atom that can have the following quantum numbers? (a) n = 3, ml = -2; (b) n = 4, l = 3; (c) n = 5, l = 3, ml = 2; (d) n = 4, l = 1, ml = 0.

Homework Answers

Answer #1

(a) n = 3, ml = -2;

if mL = -2; then, we can choose from:

l = n-1 = 3-1 = 2

so this is the max mL value and only one we can have

so

+/- 1/2 spins, total of 2 electrons

(b) n = 4, l = 3;

we could have:

ml = 0, +/-1, +/-2, +/-3,

each will have +/- spins, so

totla ml = 1,2,2,2 = 7

times two spins

7*2 = 14 electrons

(c) n = 5, l = 3, ml = 2;

for ml = 2, we could only have +/- 1/2 spins --> 2 electrons

so total of 2 electrons

(d) n = 4, l = 1, ml = 0.

once again, we could only have +/- 1/2 spins --> 2 electrons

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