The Electron Configuration: Quantum Numbers Video Lessons

Concept:

# Problem: For each electron in a ground-state Beryllium atom, select the set of quantum numbers that represents it. Check all that apply.a) n = 1, l= 0, ml= –1, ms= 1/2b) n = 2, l= 0, ml= 0, ms= –1c) n = 1, l= 0, ml= 0, ms= 1/2d) n = 1, l= 0, ml= 0, ms= –1/2e) n = 2, l= 0, ml= 0, ms= 1/2f) n = 2, l= 1, ml= 0, ms= –1/2g) n = 2, l= 1, ml= 1, ms= 1/2h) n = 2, l= 0, ml= 0, ms= –1/2

###### FREE Expert Solution

Recall that the quantum numbers that define an electron are:

Principal Quantum Number (n): possible values for n are 1 to ∞

Angular Momentum Quantum Number (l): possible values for l are 0 to n – 1

Magnetic Quantum Number (ml): possible values for ml are the range of –l to +l

Spin Quantum Number (ms): possible values for ms are either –1/2 (spin down) or +1/2 (spin up)

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###### Problem Details

For each electron in a ground-state Beryllium atom, select the set of quantum numbers that represents it. Check all that apply.

a) n = 1, l= 0, ml= –1, ms= 1/2

b) n = 2, l= 0, ml= 0, ms= –1

c) n = 1, l= 0, ml= 0, ms= 1/2

d) n = 1, l= 0, ml= 0, ms= –1/2

e) n = 2, l= 0, ml= 0, ms= 1/2

f) n = 2, l= 1, ml= 0, ms= –1/2

g) n = 2, l= 1, ml= 1, ms= 1/2

h) n = 2, l= 0, ml= 0, ms= –1/2

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