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1) Non metals

2) The melting point increase as we go down the group.

3) The boiling point also increase as we go down the group.

4) The halogens grow darker as we move down the group.

5) The same happens for Iodine as the boiling point and melting point increase as we go down the group.

6) Bromine is more reactive than Iodine as because the size of iodine is greater than that of Bromine.

7) The size of atoms become bigger and larger.

8) Nucleus of every atoms of different elements contain neutron and proton and the nucleus is covered by shells.

9) Because they are placed vertically second from the right in the periodic table.

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1) Non metals

2) The melting point increase as we go down the group.

3) The boiling point also increase as we go down the group.

4) The halogens grow darker as we move down the group.

5) The same happens for Iodine as the boiling point and melting point increase as we go down the group.

6) Bromine is more reactive than Iodine as because the size of iodine is greater than that of Bromine.

7) The size of atoms become bigger and larger.

8) Nucleus of every atoms of different elements contain neutron and proton and the nucleus is covered by shells.

9) Because they are placed vertically second from the right in the periodic table.

Explanation: