Question

the atomic number of the three elements X Y and Z are 26 and 10 respectively
which two elements belong to the same group
which two element belong to the same period .give reason​

Answer 1

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HERE IS UR ANSWER

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• element X and Z belong to same group i.e 18 as valency of both is 0.
• element Y and Z belong to same period i.e 2 as they have 2 shells.

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