The Periodic Table

Question 1

how are the elements in the periodic table arranged

Answer 1

order of increasing atomic (proton) number

Question 2

what blocks is it divided into

Answer 2

s, p, d and f blocks

Question 3

what are rows called

Answer 3

periods

Question 4

what are columns called

Answer 4

groups

Question 5

How are the elements arranged in blocks

Answer 5

according to the electron configuration in their outer shells

Question 6

How is periodicity used

Answer 6

To describe repeating patterns of properties at regular intervals in the periodic table

Question 7

Describe and explain the trend in atomic radium across period 3

Answer 7

decreases

as the nuclear charge increases

Question 8

Describe and explain the trend in 1st ionisation energy across period 3

Answer 8

increases

as the nuclear charge increases. the irregular increase across a period is due to the filling of sub-shells

Question 9

Describe and explain the trend in melting points

Answer 9

Increases from sodium to silicon then decreases

due to the bonding and structure of the element