Definitions -Electron Configuration

Question 1

Electron configuration

Answer 1

The arrangement of electrons in an atom

Question 2

Electron shielding

Answer 2

The repulsion between electrons in different inner shells

Question 3

(Atomic) Orbital

Answer 3

A region of space around the nucleus of an atom which holds up to two electrons with opposite spins (s, p, d, f)

Question 4

Sub shell

Answer 4

A group of the same type of atomic orbital (s, p, d, f)
s sub-shells contain ONE s-orbital (2 electrons)
p sub-shells contain THREE p-orbitals (6 electrons)
d sub-shells contain FIVE d-orbitals (10 electrons)
f sub-shells contain SEVEN f-orbitals (14 electrons)

Question 5

Sub shell

Answer 5

A group of the same type of atomic orbital (s, p, d, f)
s sub-shells contain ONE s-orbital (2 electrons)
p sub-shells contain THREE p-orbitals (6 electrons)
d sub-shells contain FIVE d-orbitals (10 electrons)
f sub-shells contain SEVEN f-orbitals (14 electrons)