Three elements X, Y and Z have atomic numbers 7, 8 and 9 respectively.
(a) Arrange them in the decreasing order of their atomic radii.
(b) Which of the three is most electronegative ? Why?
(c) Write the formula of compound formed between
(i) X and Y
(ii) X and Z
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(a) arrange them in the descending order of their atomic radii
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