Group 7 in periodic table

IODINE is in group 7

• true

• false

What are halogens element?

• element in period 7

• carbon(C),sillicon(Si),iodine(I),chlorine(Cl)

• fluorine , chlorine , bromine , iodine, astatine

• iodine,chlorine,oxygen,fluorine

the reactivity in group 7

As we go down the group, the melting point and boiling point

• increase

• decrease

• decrease rapidly

• remain the same

Why as we go down group 7, the melting point and boiling point increase

• the elements change from gases to solid.

• the elements change from solid to gases.

• the atomic number decrease.

Group 7 elements only form what type of ion?

• 1+

• 1-

• 7-

• +7

Common properties of the halogens

• they are all non-metal

• they all form diatomic molecule( molecule of two atoms)

• they all form negative ion carrying a single charge. E.g: (Cl-)

• they are all dark colour

The trend of halogens colour will be darker as you go down the group 7

• true

• false

• not given

What type of bonds do group 7 elements form?

• ionic bonding

• metallic bonding

• covalent bond

Why are there no reaction between Chlorine and Iodine

• because iodine has a higher reactivity

• because chlorine is more reactive

• because they are both in halogens, they can't displace.