Three elements X, Y and Z have atomic ...

CBSE Class 10 Science 2020 Outside Delhi Set 2

Question : 1 of 7

Marks: +1, -0

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?

(i)

X

and

Y

(ii)

X

and

Z

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