Quantum Numbers Worksheet #1 Solutions

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18 Questions

Which electron configuration is correct for Nickel when it forms a +3 ion?

[Ar] 4s2 3d8

Which element is an exception to the filling order and has a different electron configuration depending on whether it forms a +1 or +2 ion?

Cu

What is the correct electron configuration for Copper when it forms a +2 ion?

[Ar] 4s1 3d10

What is the maximum number of electrons that can occupy an s orbital?

2

Deduce the maximum number of electrons that can occupy the subshell of f orbitals.

14

Which element has an electron configuration that ends in 4p5?

Br

What does the principal quantum number 'n' represent?

The energy level the electron is in

For an electron with n = 2, what are the possible values of l?

1, 2

What is the maximum number of electrons that can be described by n = 4 and l = 2?

14

Which set of quantum numbers represents a 'p' orbital?

n=3, l=1, ml=0

How many total orbitals are there when n=5?

25

Which complete set of quantum numbers represents a valence electron in an atom?

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

How many electrons can occupy all of the n=3 orbitals?

2

What is the maximum number of electrons that can occupy the l=1 shell with n=4?

6

What are the possible values of ml for an electron in a 3d orbital?

-2, -1, 0, +1, +2

In which subshell can an electron with n=5 and l=1 be found?

p

What is the value of l for an electron in a 5f orbital?

3

How many electrons can inhabit all of the n=2 orbitals?

8

Learn about the four quantum numbers, their possible values, and what they represent in the context of quantum mechanics. Understand the significance of n (Principal Quantum Number), l (Secondary Quantum Number), ml (Magnetic Quantum Number), and ms (Spin Quantum Number).

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