The Periodic Table

Question 1

Periodic table

Answer 1

Arrangement reveals trends

Position of elements in table, linked to physical and chemical properties

Question 2

Atomic number

Answer 2

In order of increasing atomic number

Number of protons in an atom

Question 3

Groups

Answer 3

Vertical columns
Same number of outer shell electrons, in each group
Similar properties

Question 4

Periods

Answer 4

Horizontal rows

No of the period gives no of highest energy electron shells in an atom

Question 5

Trends across a period

Answer 5

Each period starts with an electron in a new highest energy shell
In each period, s, p are filled in the same way

Question 6

Trends down a group

Answer 6

Elements in the same group have same no of electrons in each sub shell
Similar chemical reactions

Question 7

Blocks

Answer 7

Elements in the periodic table are divided into blocks, corresponding to highest energy sub shell
4 distinctive blocks, s, p, d, f

Question 8

Group number 1

Answer 8

Alkali metals

Question 9

Group number 2

Answer 9

Alkali earth metals

Question 10

Group number 3-12

Answer 10

Transition elements

Question 11

Group number 5, 15

Answer 11

Pnictogens

Question 12

Group number 6, 16

Answer 12

Chalcogens

Question 13

Group number 7, 17

Answer 13

Halogens

Question 14

Group number 0, 18

Answer 14

Noble gases

Question 15

Periodicity

Answer 15

The repeating trend in properties of the elements