Arragement of electrons in an atom

Question 1

energy level

Answer 1

the fixed amount of energy of an electron in an atom

Question 2

Neils Bohr

Answer 2

determined that electrons absorb light to gain energy

Question 3

ground state of an atom

Answer 3

where the electrons occupy the lowest energy level n=1e

Question 4

excited state of an atom

Answer 4

one in which the electrons occupy higher energy levels that those available in the ground state
-the energy absorbed to go up a level must be equal to the energy emitted as light when going back down energy levels

Question 5

energy sublevels

Answer 5

subdivision of a main energy level consisting of one or more orbitals of the same energy
(s,p,d,f)

Question 6

The Heisenberg Uncertainty Principle States

Answer 6

it is not possible to measure the exact position and momentum of electron in stom simultaneously

Question 7

Limitations of the Bohr Model

Answer 7

-does not hold for elements with larger numbers of electrons
-due to wave nature, electrons could not travel arounf the nucleus like planets around the sun
-Bohr’s theory did not include the idea of energy sublevels

Question 8

Atomic Orbitals

Answer 8

a region in space where there is a high probability of finding an electron

Question 9

Aufbau Principe

Answer 9

electrons occupy the lowest possible energy levels before occupying higher energy levels

Question 10

Hunds Rule of Maximum Multiplicity

Answer 10

when two or more orbitals of equal energy are available, electrons occupy them singly before occupying them in pairs

Question 11

Pauli Exclusion Principle

Answer 11

no more than two electrons can occupy an oribital and they must have opposite spin