CBSE Class 10 Science 2020 Outside Delhi Set 2

Question : 1

Total: 7

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) Whichofthethreeismostelectronegative? Why?
(c) Write the formula of compound formed between
(i) X and Y
(ii) X and Z

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