DK014 : 5.0 Electronic Configuration (W9H3)

Determine which set(s) of quantum numbers is NOT allowed:

• n = 5, ℓ = 3, m = −1, s = +1⁄2

• n = 1, ℓ = 0, m = 0, s = −1⁄2

• n = 2, ℓ = 2, m = 2, s = +1⁄2

• n = 4, ℓ = 1, m = 0, s = −1⁄2

Potassium has electronic configuration of 1s2 2s2 2p6 3s2 3p6 4s1 . How many electrons will have ℓ = 0 as one of its quantum numbers.

The azimuthal quantum number represents

• shells

• sub shells

• energy levels

• heat

How many total electrons can the ‘p’ orbitals hold?

• 1

• 6

• 7

• 3

What is the correct representation for an orbital which has an "n" value of 4 and an "l" value of 2?

• 4d

• 4s

• 4f

• 4p