1.3 Periodicity

Question 1

Describe the Atomic Size of an atom

Answer 1

The size of the atom

Question 2

Describe the Covalent Radius of an atom

Answer 2

The distance between the nuclei of 2 covalently bonded atoms

Question 3

Describe the trend across a period for Atomic Size

Answer 3

The atomic size decreases across a period due to an increased nuclear charge

Question 4

Describe the trend down a group for Atomic Size

Answer 4

The atomic size increases due to increased shielding and an extra e- shell

Question 5

Describe Ionisation Energy

Answer 5

The amount of energy required to remove 1 mole of electrons from 1 mole of atoms in the gaseous state

Question 6

Describe the trend across a period for Ionisation Energy

Answer 6

The ionisation energy increases due to an increased nuclear charge

Question 7

Describe the trend down a group for Ionisation Energy

Answer 7

The ionisation energy decreases due to increased shielding and an extra e- shell

Question 8

Describe Electronegativity

Answer 8

Electronegativity is the attraction an atom has for the bonding e- in a bond

Question 9

Describe the trend across a period for Electronegativity

Answer 9

The electronegativity increases due to an increased nuclear charge

Question 10

Describe the trend down a group for Electronegativity

Answer 10

The electronegativity decreases due to increased shielding and an extra e- shell