Electrons quiz

Vocabulary flashcards covering electron cloud, energy levels, sublevels, and orbitals from Page 1 notes.

Electron cloud

Region around the nucleus where electrons are most likely to be found.

Energy level

A fixed distance from the nucleus where electrons reside; also called a shell.

Principal energy level (n)

The quantum number that designates an electron’s energy level; larger n means electrons are farther from the nucleus.

Maximum electrons per energy level

2n^2 electrons can occupy energy level n.

Sublevel

Subdivision of an energy level into s, p, d, and f sublevels.

S sublevel

First sublevel; spherical shape; holds up to 2 electrons.

P sublevel

Second sublevel; contains 3 orbitals; holds up to 6 electrons.

D sublevel

Third sublevel; contains 5 orbitals; holds up to 10 electrons.

F sublevel

Fourth sublevel; contains 7 orbitals; holds up to 14 electrons.

Orbitals

Regions within a sublevel where electrons are located; each orbital can hold 2 electrons.

Max electrons in s sublevel

2 electrons.

Max electrons in p sublevel

6 electrons.

Max electrons in d sublevel

10 electrons.

Max electrons in f sublevel

14 electrons.

Orbitals in s sublevel

1 orbital.

Orbitals in p sublevel

3 orbitals.

Orbitals in d sublevel

5 orbitals.

Orbitals in f sublevel

7 orbitals.

Sublevel order within a level

The order of filling within a level is s, then p, then d, then f.

Number of sublevels in energy level n

There are n sublevels in energy level n, up to a maximum of 4 (S, P, D, F).

n=1 sublevel

Has 1 sublevel: S.

n=2 sublevels

Has 2 sublevels: S and P.

n=3 sublevels

Has 3 sublevels: S, P, D.

n=4 sublevels

Has 4 sublevels: S, P, D, F.

aufbau principle

fill in order

hunds rule

fill all places first then double up

paulis principle

arrows must face opposite directions