Quantum Numbers And Electronic Configuration Examples And Worksheet

Quantum Numbers And Electronic Configuration Examples And Worksheet - F. Scullion

Quantum Numbers and Electronic Configuration.

F Scullion:

Each electron has a set of four numbers, called quantum numbers, that

specify it completely; no two electrons in the same atom can have the

same four.

That is essentially the Pauli Exclusion Principle.

1. The Principal Quantum Number. Given the symbol “n”.

This denotes the energy level (shell).

This has integer values 1, 2, 3.

2. The Angular Momentum Quantum Number. Given the symbol “

”

It denotes the number of sub-levels (orbitals) in each energy level and

the shape of these orbitals.

The number of orbitals in any level = the number of the energy level.

The number of electrons in any level is found by the formula:

No. of electrons = 2n

where n is the principle quantum number (energy level)

Energy

Maximum

Number of

level

Number of

orbital

Subshells

(Value of n)

Electrons

Clover-

Spherical

Dumbell

Complex

= 2n

leaf

√

Quantum Numbers And Electronic Configuration Examples And Worksheet - F. Scullion