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प्रश्न
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
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उत्तर
Carbon Dioxide CO2
| Elements | Symbols |
| (Carbon) | C |
| [Oxygen (oxide)] | O |
No. of atoms of this element present
1 atom of - C, 2 atoms of - O
संबंधित प्रश्न
Explain the significance of the symbol H.
The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of
an element as its symbol, was :
Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and Y are most likely to be respectively :
Give the symbol and the number of atoms of the following elements present in sodium chloride.
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
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Arsenic
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Sodium
Write the radical of the following valency:
magnesium
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).
Nitrate
