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प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
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उत्तर
| Radicals | Symbol | Valencies |
| (a) Hydroxide | `OH^-` | 1 |
| (b) Chloride | `Cl^-` | 1 |
| (c) Carbonate | `CO_3^(2-)` | 2 |
| (d) Ammonium | `NH_4^+` | 1 |
| (e) Nitrate | `NO_3^-` | 1 |
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संबंधित प्रश्न
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Na1+ Cl1-
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
Give the symbol of the following element:
Platinum
Give the formula of the following acid:
Nitric
Give the formula of the following acid:
Carbonic
Give the formula of the following gas:
Nitrous oxide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Bisulphate
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
