1.

Write the names and symbols of the constituent elements and identify their valencies from the molecular formula given below.KCl, HBr, MgBr2, K2O, NaH, CaCl2, CCl4, HI, H2S, Na2S, FeS, BaCl2

Answer»

1 potassium chloride
HYDROGEN bromide
potassium oxide
may be this NaOH IE sodium hydroxide
calcium chloride
CARBON tetrachloride
hydrogen sulphide
hydrogen iodide
sodium sulphide
iron sulphide
barium chloride
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