Atomic Structure

Question 1

Relative Atomic mass meaning

Answer 1

Average mass of an atom of an element relative to 1/12th of the mass of an atom of carbon-12

Question 2

What are the 5 steps in time of flight spectrometers?

Answer 2

Sample, Ionisation, acceleration, drift, detection

Question 3

Which ion reaches the detector first?

Answer 3

Lightest

Question 4

1st ionisation energy meaning

Answer 4

Energy required to remove 1 mole of electrons from one mole of atoms in their gaseous state

Question 5

3 factors affecting Ionisation energy

Answer 5

Nuclear charge, distance from nucleus, shielding

Question 6

How does nuclear charge affect ionisation energy?

Answer 6

The greater the nuclear charge,the stronger the attraction for electrons

Question 7

How does the distance from nucleus affect the ionisation energy?

Answer 7

Attraction falls rapidly with distance.

Question 8

How does shielding affect the ionisation energy?

Answer 8

As the number of electrons between outer electrons and nucleus increases, the outer electrons feel less attraction towards nuclear charge.