Atomic Structure

Question 1

What are the relative masses and charges of the sub atomic particles?

Answer 1

Neutron: 1, +1 Proton: 1, 0 Electron: 1/1840

Question 2

What is atomic mass?

Answer 2

Number of protons in an atom (and therefore also electrons)

Question 3

What is mass number?

Answer 3

Total number of protons and neutrons

Question 4

What are isotopes?

Answer 4

Isotopes are atoms with the same number of protons but different number of neutrons, and therefore a different mass number

Question 5

Name the stages of the mass spectrometer

Answer 5

Ionisation, acceleration, ion drift (in the flight tube), detection, data analysis.

Question 6

What must you account for when calculating relative atomic mass from mass spectra?

Answer 6

The relative abundances of isotopes

Question 7

How many electrons do each of the atomic orbitals hold?

Answer 7

s holds 2, p holds 6, d holds 10

Question 8

Name the three sub atomic particles which make up an atom

Answer 8

Proton, electron, neutron

Question 9

What is ionisation energy?

Answer 9

Energy required to remove one mole of electrons from one mole of atoms in a gaseous state

Question 10

What is the trend in ionisation energy across a period?

Answer 10

General increase along period due to increasing nuclear charge