Periodic Table : Group 17 (Halogen)

Which of the followings is correct on physical property as going down Group 17

• Melting & boiling point increase

• Density increase

• Colour becomes lighter

• State of matter change from gas to liquid to solid

As going down group 17, atomic size of elements

• Increase

• Decrease

Group 17 has .... valence electron

• 1

• 7

• 11

• 17

To achieve stable electron octet arrangement, chlorine atom will ...... electron

• Donate 7

• Donate 1

• Accept 7

• Accept 1

Chlorine atom has electrone arrangement 2.8.7.

After it accepts 1 electron , it will become

• Chloride ion

• Chlorine gas

Going down group 17 reactivity of atoms

• Increase

• Decrease

Elements in group 17 exist as

• Monoatomic

• Diatomic

• Triatomic

Going down Group 17 distance between proton and valence electron

• Increase

• Decrease

Going down Group 17, forces of attraction between proton and valence electron

• Increase

• Decrease

Going down group 17, ability of atom to accept 1 electron into its outermost shell

• Increase

• Decrease