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Question

Name the element which is in :

(a) the first group and third period.                         (b)  seventeenth group and second period.


Solution

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

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


Chemistry
Science for Tenth Class - Part II - Chemistry
Standard X

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