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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
What do you understand by :
Noble gases
What do the following symbol stand for?
H2
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Match the formulas of the following gases with their correct names :
Gases - (a) H2 (b) N2 (c) O2 (d) Cl2 (e) HCI (f) NH3 (g) CO (h) CO2 (i) SO2 (j) NO (k) NO2.
Names:
(1) Ammonia (2) Nitrogen Dioxide (3) Oxygen (4) Hydrogen (5) Nitrogen (6) Chlorine (7) Carbon Monoxide (8) Sulphur Dioxide (9) Nitrogen Monoxide (10) Carbon Dioxide (11) Hydrogen Chloride
State the type of element for the following:
Antimony
Write the radical of the following valency:
Sodium
Write the radical of the following valency:
Carbonate
Write the chemical formula of the following:
aluminium chloride
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
write symbol with the variable valency
Mass of one atom of oxygen is
