Question

please solve this question​

Answer 1

i) Y

ii) X

iii) Z

iv) 2 negative

v) Y = non- metal , Z = metal

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Answer 2

Answer:

(i) element Y belongs to second period.

(ii) element X belongs to eighteenth period.

(iii) element Z belongs to second group.

(iv) valency of element Y is -2.

(v) element Y is a non-metal and element Z is a metal.

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