Electron Configuration Flashcards
1
Q
Define orbital
A
Region where an electron/electrons are most likely found
2
Q
What are the 4 types of sub-shells?
A
s, p, d, f (f not in syllabus)
3
Q
Describe the s sub-shell.
A
Contains one orbital
Spherical shape
Can hold 2 electrons
4
Q
Describe the p sub-shell.
A
Dumbbell-shaped
Contains 3 orbitals (px, py, pz)
Each orbital can hold 2 electrons (6 in total)
5
Q
Describe the electron configuration.
A
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6…
NB! Fill 4s before 3d (3d has higher energy than 4s), therefore fill 5s before 4d and so on
6
Q
What is the rule for electron configuration of ions?
A
Always remove the electron from the orbitals that are furthest away from the nucleus
7
Q
Define free radicals
A
A species with one or more unpaired electrons
Free radicals are represented with a dot
