Class 10 > Science

Question

The atomic number of Na and Mg is 11 and 12 respectively and they belong to same period. (a) Which one would have smaller atomic size (b) Which one waved be more electropositive? (c) To which group would each one belongs?
Hard

Solution

(a) Magnesium has smaller size than Na. (b) Na is more electropositive than Mg. (c) Na belongs to Group 1, Mg belongs to Group 2. Na would be more electro positive because it can lose the valance electron more easily.

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