Quantum Numbers & Electronic Configuration

Quantum Numbers are solutions of

• Heisenberg’s Uncertainty Principle

• Einstein’s mass energy relation

• Schrodinger’s Wave Equation

• Hamiltonian Operator

Which of the following quantum number gives the shape of

atomic orbital of sub-shell?

• n

• ℓ

• m_l

• m_s

Which of the following can be the quantum numbers for an

orbital?

• n = 4, ℓ = 4, m_ℓ = 3

• n = 2, ℓ = 3, m_ℓ = 1

• n = 3, ℓ = 2, m_ℓ = -1

• n = 3, ℓ = 0, m_ℓ = -3

“No two electrons in an atom can have the same set of n, ℓ, mℓ

and ms quantum numbers." This is a statement of

• Pauli exclusion principle

• Aufbau principle

• Hund’s rule

• Bohr’s theory

Element Z has the ground state electronic configuration 1s²2s²2p³.

Contains how many unpaired electrons in the outermost shell?

• 1

• 2

• 3

• 4

Give the ground state electron configuration for Beryllium (4 e^-) using spdf notation.

Give the ground state electron configuration for Silicon (14 e^-) using spdf notation.

A. Write the orbital notation

B. Identify if paramagnetic or diagmagnetic.

Sodium (11 electrons)

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A. Write the orbital notation

B. Identify if paramagnetic or diagmagnetic.

Neon (10 electrons)

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A. Write the orbital notation

B. Identify if paramagnetic or diagmagnetic.

Titanium (22 electrons)

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