Chapter 7 - The Periodic Table

Question 1

How are electrons arranged reading from left to right?

Answer 1

They are arranged in order of increasing atomic number

Question 2

How are groups arranged in the periodic table?

Answer 2

Each element in a group contains the same number of outer shell electrons and has similar properties

Question 3

What does the number of the period show?

Answer 3

It gives the number of the highest energy electron shell in an element’s atoms

Question 4

What does periodicity mean?

Answer 4

Periodicity means the repeating trend in properties of the elements going across a period

Question 5

Give 4 properties that periodicity looks at?

Answer 5

• electron configuration
• ionisation energy
• structure
• melting points

Question 6

What is the trend across a period in terms of filling sub shells?

Answer 6

For each period the s- and p- sub shells are filled in the same way

Question 7

What is the trend going down a group in terms of electron configuration?

Answer 7

The elements in each group have atoms with the same number of electrons in each sub-shell

Question 8

What is the name for group 1 metals?

Answer 8

Alkali metals

Question 9

What is the name for group 2 metals?

Answer 9

Alkaline earth metals

Question 10

What is group 3-12 called?

Answer 10

Transition metals

Question 11

What is group 15 called?

Answer 11

Pnictogens

Question 12

What is group 16 called?

Answer 12

Chalcogens

Question 13

What is group 17 called?

Answer 13

Halogens

Question 14

What is the name of group 18?

Answer 14

Noble gases