FORM 4 KSSM 8.2 PERIODIC TABLE

The following properties are gradual change from left to right in a periodic table except:

• Decrease in electrical conductivity

• Decrease in acidity of oxides

• Decrease in metallic properties

• Increase in non-metallic properties

Which of the elements has the biggest proton number?

• W

• X

• Y

• Z

Which element is a non-metal?

• A

• B

• C

• D

Which one is electron?

• A

• B

• C

• D

How many electrons are in this atom?

• 1

• 3

• 4

• 7

Sodium has 11 electrons. What is its electron arrangement?

• 1.10

• 2.9

• 2.5.4

• 2.8.1

An atom become a ___________ ion when it accepts electrons

• positive

• negative

Aluminium ion becomes positively charged because it

• accepts 3 electron

• donates 3 electron

These metals are halogens accept:

• Bromine

• Iodine

• Neon

• Chlorine

Oxygen atom has ____________ proton number.

• 8

• 10

• 14

• 16