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Ch.7 - Quantum MechanicsWorksheetSee all chapters

# Quantum Numbers: Number of Electrons

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Sections
Wavelength and Frequency
Speed of Light
The Energy of Light
Electromagnetic Spectrum
Photoelectric Effect
De Broglie Wavelength
Heisenberg Uncertainty Principle
Bohr Model
Emission Spectrum
Bohr Equation
Introduction to Quantum Mechanics
Quantum Numbers: Principal Quantum Number
Quantum Numbers: Angular Momentum Quantum Number
Quantum Numbers: Magnetic Quantum Number
Quantum Numbers: Spin Quantum Number
Quantum Numbers: Number of Electrons
Quantum Numbers: Nodes

The Quantum Numbers can give both the quantity and location of electrons within a given atom.

###### Quantum Theory & Electrons

Concept #1: Number of Electrons in Shells

Example #1: How many electrons can be found in the 7th shell of an atom?

Concept #2: Number of Electrons in Subshells & Orbitals

Example #2: Determine the number of electrons that can be found in the 7th shell and d sublevel.

Practice: Determine the number of electrons that can have the following set of quantum numbers: n = 3, ml = 0.

Practice: Determine the number of electrons that can have the following set of quantum numbers: n = 2, ms = –1/2.

Practice: Determine the number of electrons that can have the following set of quantum numbers.

n = 4, l = 3,  ml = – 1

Practice: Determine the number of electrons that can have the following set of quantum numbers.

n = 4, mL = – 1, ms = –1/2