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प्रश्न
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).
Oxide
उत्तर
| Name | Symbol | Ion | Valency |
| Oxide | \[\ce{O}\] | \[\ce{O^{2-}}\] | −2 |
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संबंधित प्रश्न
How are the elements with variable valency named? Explain with an example.
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
Give the symbol of the following element:
Silicon
State the type of element for the following:
Calcium
Write the chemical formula of the following:
aluminium chloride
Give the formula of the following gas:
Ammonia
Give the formula of the following gas:
Carbon monoxide
State a reason why the symbol of calcium is ‘Ca’ and of copper is ‘Cu’
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
