Which of the following is a metal?

• Oxygen

• Argon

• Lead

• Silicon

What is the electron arrangement of Oxyen atom?

• 2.8.6

• 2.8.8

• 2.6

• 2.8.8.4

Which is NOT true about Group 1 elements?

• Reactivity increases down the group

• Boiling point increases down the group

• Atomic size increases down the group

• Density increases down the group

Group 1 metal reacts with water to produce metal hydroxide and ________?

Group 1 metal cannot react with______?

• Water

• Halogen

• Oxygen

• Acid

Potassium is more reactive than Sodium?

Yes or No

• Yes

• No

Tick two correct statements about Group 18.

• All group 18 elements are octet

• Also known as noble gases

• Boiling point increases down the group

• Argon is used in the hot air balloon

• All are unreactive except Helium

Group 17 is known as

• Semi-metal

• Halogen

• Transition metal

• Gas

Boiling point of Group 17 increases down the group. Which of the statement below best explains about this?

• Atomic size increases

• Electrostatic force of attraction higher

• Forces of attraction between molecules stronger

• Force of attraction between nucleus and valence electrons increases

Which is not located in Period 3?

• Copper

• Sodium

• Silicon

• Aluminium