Arrangement Of Electrons In Atom

Question 1

Energy levels

Answer 1

the fixed energy value an electron in an atom can have

Question 2

Ground state

Answer 2

electron in its normal energy level

Question 3

Excited state

Answer 3

Electron has jumped up to a higher energy level because energy has been supplied to the atom, the electron is not stable here so it eventually falls back down

Question 4

Colour changes for hydrogen (series and n=6->n=2…)

Answer 4

Balmer series
N=6->n=2 violet
n=5->n=2 violet
n=4->n=2 blue
n=3->n=2 red

Question 5

Electrons move in wave like motion…

Answer 5

Wave particle duality (De brogles wave motion)

Question 6

Heisenbergs uncertainty principle states…

Answer 6

It is impossible to measure at the same time, the velocity and position of an electron

Question 7

Atomic orbital

Answer 7

A region in space where there is a high probability(likelihood) of finding an electron.

Question 8

Sublevels

Answer 8

S,P,D,F
S holds 2
P holds six (Px Py Pz)
D holds 10
F holds 14

Question 9

Electrons fill sublevel…

Answer 9

Singly first, before doubling up

Question 10

4s goes before…

Answer 10

3d Reason:

Question 11

When looking at electron configurations you can figure out the main energy levels, orbitals, and sublevels by…

Answer 11

Main energy levels: Biggest number
Orbitals: amount of numbers used
Sublevels: count (Px Py Pz = 1)