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प्रश्न
Write the formula of the following compound:
Sodium nitrate
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उत्तर
Sodium nitrate - NaNO3 - `"NO"_(3)^(1-)`
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संबंधित प्रश्न
Write down the formulae of sodium oxide.
Write down the formulae of magnesium hydroxide.
Write the chemical formula of the Magnesium chloride.
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
Name the following compounds. Also write the symbols/formulae of the ions present in them :
- CuSO4
- (NH4)2SO4
- Na2O
- Na2CO3
- CaCl2
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
Give the formula and valency of:
| Aluminate | ______ | ______ |
Write the formula of the following compound:
Potassium sulphate
Write the formula of the following compound:
Potassium bicarbonate
Write the formula of the following compound:
Sodium dichromate
Write the formula of the following compound:
Calcium carbonate
Write the formula of the following compound:
Magnesium nitrate
Write the formula of the following compound:
Magnesium carbonate
Write the formula of the following compound:
Magnesium sulphate
Write the formula of the following compound:
Iron [II] 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.
NaCO3
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaO
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 |
What is a chemical formula?
