write the symbol and the valencies of the following

sodium

potassium

copper

silver

mercury

ammonium

chlorine

bromine

iodine

hydroxide

acetate

hydrogen carbonate

hydrogen cyanide

nitrate

magnesium

calcium

zinc

lead

mangnese

carbonate

sulphate

sulphite

oxide

aluminium

iron

phosphate

phosphite

nitrate

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Solution

1. Sodium: Na (valency 1)
2. Potassium: K (valency 1)
3. Copper: Cu (valency 1 and 2)
4. Silver: Ag (valency 1)
5. Mercury: Hg (valency 1 and 2)
6. Ammonium: NH₄⁺ (valency 1)
7. Chlorine: Cl (valency 1)
8. Bromine: Br (valency 1)
9. Iodine: I (valency 1)
10. Hydroxide: OH^- (valency 1)
11. Acetate: CH₃COO^-(valency 1)
12. Hydrogen carbonate: H₂CO₃ (valency 0)
13. Hydrogen cyanide: HCN (valency 0)
14. Nitrate: NO₃^- (valency 1)
15. Magnesium: Mg (valency 2)
16. Calcium: Ca (valency 2)
17. Zinc: Zn (valency 2)
18. Lead: Pb (valency 1)
19. Manganese: Mn (valency 2)
20. Carbonate: CO₃^2- (valency 2)
21. Sulphate: SO₄^2- (valency 2)
22. Sulphite: SO₃^2- (valency 2)
23. Oxide: O^2- (valency 2)
24. Aluminium: Al (valency 3)
25. Iron: Fe (valency 2 and 3)
26. Phosphate: PO₄^3- (valency 3)
27. Phosphite: PO₃^3- (valency 3)
28. Nitrate: NO₃^- (valency 1)

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Similar questions

Q. Write the formula of the following compounds.
calcium hydroxide, copper chloride, iron sulphate, sodium carbonate, copper nitrate, copper oxide, lead sulphide, magnesium chloride, zinc sulphate, potassium hydroxide.

Identify the odd one out and justify.

(a) Chloride, nitrate, hydride, ammonium

(b) Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia

(d) Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate

(e) Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride

(f) Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.

(g) Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.

(h) Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.

Q. Give equations for the following conversions:
(i) Sodium to sodium hydroxide using water.
(ii) Steam to hydrogen using burning magnesium.
(iii) Dilute sulphuric acid to hydrogen using zinc.
(iv) Mercuric oxide to mercury.
(v) Silver oxide to silver.
(vi) Copper hydroxide to copper oxide.
(vii) Calcium hydroxide to calcium oxide.
(viii) Lead carbonate to lead.
(ix) Potassium nitrate to oxygen.
(x) Copper nitrate to nitrogen dioxide.
(xi) Mercuric nitrate to mercury.
(xii) Silver nitrate to silver.

Write the balanced chemical equations of the following reactions.

(a) Sodium hydroxide + sulphuric acid $\to$ sodium sulphate + water

(b) Potassium bicarbonate + sulphuric acid $\to$ potassium sulphate + carbon dioxide + water

(d) Chlorine + sulphur dioxide + water $\to$ sulphuric acid + hydrogen chloride

(e) Silver nitrate $\to$ silver + nitrogen dioxide + oxygen

(f) Copper + nitric acid $\to$ copper nitrate + nitric oxide + water

(g) Ammonia + oxygen $\to$ nitric oxide + water

(h) Barium chloride + sulphuric acid $\to$ barium sulphate + hydrochloric acid

(i) Zinc sulphide + oxygen $\to$ zinc oxide + sulphur dioxide

(j) Aluminium carbide + water $\to$ aluminium hydroxide + methane

(k) Iron pyrites ( $F e S_{2}$ ) + oxygen $\to$ ferric oxide + sulphur dioxide

(l) Potassium permanganate + hydrochloric acid $\to$ potassium chloride + manganese chloride + chlorine + water

(m) Aluminium sulphate + sodium hydroxide $\to$ sodium sulphate + sodium meta aluminate + water.

(n) Aluminium + sodium hydroxide + water $\to$ sodium meta aluminate + hydrogen

(o) Potassium dichromate + sulphuric acid $\to$ potassium chloride + chromium chloride + water + chlorine.

(p) Sulphur + nitric acid $\to$ sulphuric acid + nitrogen dioxide + water.

(q) Sodium chloride + manganese dioxide + sulphuric acid $\to$ sodium hydrogen sulphate + manganese sulphate + water + chlorine.

Write the balanced chemical equations for the following reactions.
(A) Calcium hydroxide + Carbon dioxide → Calcium carbonate + water
(B) Zinc + Silver nitrate → Zinc nitrate + Silver
(C) Aluminium + copper chloride → Aluminium chloride + Copper
(D) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride.

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write the symbol and the valencies of the following sodium potassium copper silver mercury ammonium chlorine bromine iodine hydroxide acetate hydrogen carbonate hydrogen cyanide nitrate magnesium calcium zinc lead mangnese carbonate sulphate sulphite oxide aluminium iron phosphate phosphite nitrate