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प्रश्न
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
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उत्तर
| S.No | Element | Symbols |
| (i) | Oxygen | O |
| (ii) | Gold | Au |
| (iii) | Calcium | Ca |
| (iv) | Cadmium | Cd |
| (v) | Iron | Fe |
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संबंधित प्रश्न
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
K1+ Cl1-
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:
Sulphur [sulphide]
Give the symbol of the following element:
Platinum
State the type of element for the following:
Phosphorus
Write the chemical formula of the following:
calcium carbonate
Name the following:
An acid whose formula is ‘H2CO3’.
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).
Phosphate
What is meant by the term ‘symbol’?
Mass of one atom of oxygen is
