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प्रश्न
State the valency of the following metallic element and write symbol with the valency
Zinc
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उत्तर
Metals have positive valency 1, 2 or 3,
| Element | Symbol | Valency |
| Zinc | \[\ce{Zn}\] | \[\ce{Zn^2+}\] |
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संबंधित प्रश्न
State whether the following statement is true or false:
The symbol of element cobalt is CO.
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
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?
Select the correct answer from the choice given below.
The symbol of mercury is
Give the symbol of the following element:
Nitrate
Give the symbol of the following element:
Sulphite
Give the formula of the following acid:
Nitric
Give the formula of the following gas:
Carbon monoxide
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
The name copper was taken from ______.
