Question

Answer the following with reference to periodic table:

i. Name the elements present in Group 1 sequentially.

ii. Name the first and last element present in Group 17.

iii. Name the first and last element of Period 2.

iv. How many periods and groups are present in the periodic table?

v. Name the first and last element present in the group 18

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Answer 1

Answer:

4. 18 period & 7 groups

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