The Periodic Table - Periodic Properties

Question 1

Atomic Radius

Answer 1

Across a Period: Decreases
Down a Group: Increases

Question 2

Ionisation Energy

Answer 2

Across a Period: Increases
Down a Group: Decreases

Question 3

Electronegativity

Answer 3

Across a Period: Increases
Down a Group: Decreases

Question 4

Electrical Conductivity

Answer 4

Across a Period: Decreases
Down a Group: Constant

Question 5

Melting & Boiling Points

Answer 5

Across a Period: Increases up until group 14, then decreases
Down a Group: Usually decreases in metals but increases in non-metals

Question 6

Define Atomic Radius

Answer 6

The distance from the nucleus of an atom to the outermost electron shell

Question 7

Define Ionisation Energy

Answer 7

The energy needed to remove an electron from an atom in a gaseous state

Question 8

Define Electronegativity

Answer 8

Electronegativity is the ability of an atom to attract shared electrons in a covalent bond.