12
Question Question 12
Give the symbol and valency of the following elements and radicals.
(a) Potassium
(b) Sodium
(c) Hydrogen
(d) Calcium
(e) Aluminum
(f) Magnesium
(g) Zinc
(h) Chlorine [chloride]
(i) Sulphur [sulphide]
(j) Nitrogen [nitride]
(k) Oxygen [oxide]
(l) Ammonium
(m) Bicarbonate
(n) Nitrate
(o) Bisulphate
(p) Bisulphite
(q) Hydroxide
(r) Carbonate
(s) Sulphate
(t) Sulphite
| S. No. | Element/Radicals | Symbol | Valency |
|---|---|---|---|
| (a) | Potassium | K+ | +1 |
| (b) | Sodium | Na+ | +1 |
| (c) | Hydrogen | H+ | +1 or -1 |
| (d) | Calcium | Ca2+ | +2 |
| (e) | Aluminium | Al3+ | +3 |
| (f) | Magnesium | Mg2+ | +2 |
| (g) | Zinc | Zn2+ | +2 |
| (h) | Chlorine [chloride] | Cl- | -1 |
| (i) | Sulphur [sulphide] | S2- | -2 |
| (j) | Nitrogen [nitride] | N3- | -3 |
| (k) | Oxygen [oxide] | O2- | -2 |
| (l) | Ammonium | NH4+ | +1 |
| (m) | Bicarbonate | HCO3- | -1 |
| (n) | Nitrate | NO3- | -1 |
| (o) | Bisulphate | HSO4- | -1 |
| (p) | Bisulphite | HSO3- | -1 |
| (q) | Hydroxide | OH- | -1 |
| (r) | Carbonate | CO32- | -2 |
| (s) | Sulphate | SO42- | -2 |
| (t) | Sulphite | SO32- | -2 |