An element X, in which the difference in electrons present valence shell (M shell) and penultimate shell is equal to the number of electrons present in first shenll, undergoes combustion to produce Y. Y turns lime water milky due to the formaion of Z. Identify X, Y and Z.

An element X, in which the difference in electrons present valence she

1.	An element X, in which the difference in electrons present valence shell (M shell) and penultimate shell is equal to the number of electrons present in first shenll, undergoes combustion to produce Y. Y turns lime water milky due to the formaion of Z. Identify X, Y and Z.
Answer» `C, CO_(2),CaCO_(3)` `S,SO_(2),CaSO_(3)` `S, SO_(2),CaSO_(3)` `C,CO_(2),Ca(HCO_(3))_(2)` Solution :Electronic configuration of X is 2, 8, 6 Hence X is SULPHUR `underset((X))(S)+O_(2)tounderset((Y))(SO_(2))` `underset(Y)(SO_(2))+underset(("milky white"))(Ca(OH)_(2))tounderset(Z)(CaSO_(3))darr+H_(2)O`