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प्रश्न
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उत्तर
Potassium carbonate - K2CO3 - `"K"^1"CO"_3^(2-)`
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संबंधित प्रश्न
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
The atomicities of ozone, sulphur, phosphorus and argon are respectively :
The formula of the nitride of a metal X is XN, state the formula of :
- its sulphate
- its hydroxide.
Name the element in the compound and give the formula of the following compound:
Nitric acid
Name the element in the compound and give the formula of the following compound:
Green vitriol
Write the formula of the following compound:
Potassium sulphate
Write the formula of the following compound:
Potassium aluminate
Write the formula of the following compound:
Sodium dichromate
Write the formula of the following compound:
Sodium plumbite
Write the formula of the following compound:
Sodium bicarbonate
Write the formula of the following compound:
Sodium nitrite
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Aluminium carbonate
Write the formula of the following compound:
Aluminium oxide
Write the formula of the following compound:
Iron [III] sulphide
Write the formula of the following compound:
Silver [II] chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Ca2(PO4)3
Complete the following crossword puzzle (Fig. 3.1) by using the name of the chemical elements. Use the data given in Table.
| Across | Down | ||
| 2 | The element used by Rutherford during his α–scattering experiment | 1 | A white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air |
| 3 | An element which forms rust on exposure to moist air | 4 | Both brass and bronze are alloys of the element |
| 5 | A very reactive non–metal stored under water | 6 | The metal which exists in the liquid state at room temperature |
| 6 | Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with burning splinter produces a pop sound. | 8 | An element with symbol Pb |
