Name the element which is in:
(a) First group and third period.
(b) Seventeenth group and second period.

Academic Chemistry NCERT Class 10

(a) Sodium (Na) is the element that is in the first group and the third period.

(b) Fluorine (F) is the element that is in the seventeenth group and the second period.

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Updated on: 10-Oct-2022

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