Answer :

(i) This metal is surely non metal because metals are represented in the left side of periodic table.

(ii) Its electronic configuration is (2,6), so it has 6 valence electrons.

(iii) It has 6 electrons in its valence shell therefore the valency is 2.

(iv) The element which has configuration (2,6) is Oxygen.

(v) The formula with sodium id Na2Y.

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