Two elements X and y belong to 1 and 2 respectively in the same period . Compare them with respect to (a) metallic character (b) formulae of their oxides
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(a)x is more metallic than y since y has one extra valence electron due to which attraction between the proton and electron is more and size becomes smaller than that of x and hence y is less metallic than x
(across a period metallic property decrease as size decreases and down a group metallic ppty increases as size increases)
(b)x valency 1 =x2o
y valency 2=yo
(across a period metallic property decrease as size decreases and down a group metallic ppty increases as size increases)
(b)x valency 1 =x2o
y valency 2=yo
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