An element Y has a valency of 4. Write the formula for its:
(i) chloride
(ii) oxide
(iii) sulphate
(iv) carbonate
(v) nitrate
(i) The valency of chloride ion is -1. Hence the formula becomes YCl4
(ii)The valency of oxide ion is -2. Hence the formula becomes YO2
(iii) The valency of sulphate ion is -4. Hence the formula becomes Y(SO4)2
(iv) The valency of carbonate ion is -4. Hence the formula becomes Y(CO3)2
(v) The valency of nitrate ion is -1. Hence the formula becomes Y(NO3)4