# Chemistry

Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (ℓ), the magnetic quantum number (mℓ), and the spin quantum number (ms) have strict rules which govern the possible values. Identify allowable combinations of quantum numbers for an electron. Select all that apply.

n = 5, ℓ= 4, mℓ= -2, ms= +1/2
n = 4, ℓ= 3, mℓ= 4, ms= -1/2
n = 1, ℓ= 1, mℓ= 1, ms= +1/2
n = 2, ℓ= 0, mℓ= 0, ms= -1
n = 3, ℓ= -1, mℓ= 1, ms= -1/2
n = 3, ℓ= 1, mℓ= 1, ms= +1/2

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1. What's the problem? As you say there are rules. All you need to do is to supply the rules.
The first one is OK. There is at least one more that is OK.

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posted by DrBob222
2. last one

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posted by Paige
3. right

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posted by DrBob222

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