Question

Write the valancy and formulae of the following :-Compound

(a) Boric acid

(b) Phosphoric acid

(c) Nitrous acid

(d) Nitric acid

(e) Sulphurous acid

(f) Sulphuric acid

(g) Hydrochloric acid

(h) Silica (sand)

(i) Caustic soda (sodium hydroxide) Caustic potash (potassium hydroxide)

(k) Washing soda (sodium carbonate)

(l) Baking soda (sodium bicarbonate)

(m) Lime stone.

(calcium carbonate)

(n) Water

(o) Hydrogen sulphide

(p) Ammonia

(q) Phosphine

r) Methane​

Answer 1

Answer:

there are no valencies for compounds

valencies are for elements only

Explanation: