Question

Elements P, Q and R have atomic numbers 13, 7 and 10 respectively. (i) Which element combines with hydrogen to form a basic gas? (ii) Which element has an electron affinity zero? (iii) Name the element, which forms an ionic compound with chlorine.

Answer 1

Answer:

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Explanation:

(i) The element B would have higher metallic character than A

(ii) The element A would probably have higher electron affinity than B

(iii) The element A would have smaller atomic size than B.

This is because as we move left to right in any period of periodic table the metallic character increases and electron affinity becomes more and more positive. Also, atomic size decreases along the period as we move left to right.

Answer 2

Answer:

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