Chemistry
Choose the correct answer:
(i) In the periodic table, alkali metals are placed in the group ………..
- 1
- 11
- 17
- 18
(ii) Which of the following properties do not match with elements of the halogen family?
- They have seven electrons in their valence shell.
- They are highly reactive chemically.
- They are metallic in nature.
- They are diatomic in their molecular form.
Periodic Table
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Answer
(i) 1
Reason — In the periodic table, alkali metals are placed in the group 1 as they have one electron in the outer most shell.
(ii) They are metallic in nature.
Reason — Halogens are non-metallic in character.
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