Question

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Atoms of eight elements A. B. C. D, E, F. G and H have the same number of electronic shells but different number of electrons in their outermost shell. It was found that elements A and G combine to form an ionic compound. This compound is added in a small amount to almost all vegetable dishes during cooking. Oxides of elements A and B are basic in naturewhile those of E and F are acidic. The oxide of D is almost neural. Based on the aboveinformation answer the following questions:
(i) To which group or period of the periodic table do the listed elements belong?
(ii) What would be the nature of compound formed by a combination of elements B and F?
(iii) Which two of these elements could definitely be metals?
(iv) Which one of the eight elements is most likely to be found in gaseous state at room temperature?
(v) If the number of electrons in the outermost shell of elements C and G are 3 and 7 respectively, write the formula of the compound formed by the combination of C and G.
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Answer 1

Answer:

(iv) is correct answer

Explanation:

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Answer 2

Answer:

1) Third period

Group: 1,2,13,14,15,16,17,18 respectively.

2) Nature of compound: electrovalent / ionic.

3) Metals A and B.

4) G/H.

5) CG3.

Explanation:

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