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प्रश्न
Write the formula of the following compound:
Lead [II] sulphate
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उत्तर
Lead [II] sulphate - PbSO4 - `"SO"_4^(2-)`
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संबंधित प्रश्न
What is meant by the term chemical formula?
Write the chemical formula of the Calcium carbonate.
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
Explain the difference between 2N and N2.
Write down the formulae for the following compounds :
Calcium oxide
If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.
Complete the following statement by selecting the correct option :
The correct formula of aluminium oxide is
Match the following:
| Column A | Column B |
| (a) Pb(NO3)2 | (i) rotten eggs smell |
| (b) CO2 | (ii) burns with a pop sound |
| (c) (NH4)2Cr2O7 | (iii) the suffocating smell of sulphur |
| (d) HCI | (iv) lime water turns milky |
| (e) NO2 | (v) crackling sound |
| (f) O2 | (vi) residue swells up |
| (g) H2 | (vii) brown gas |
| (i) H2S | (viii) supports combustion |
| (j) SO2 | (ix) fumes with NH3 solution |
Write the formula of the following compound:
Sodium permanganate
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Sodium iodide
Write the formula of the following compound:
Copper [II] chloride
Write the formula of the following compound:
Copper [II] nitrate
Write the formula of the following compound:
Iron [III] chloride
Write the formula of the following compound:
Iron [II] hydroxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaO
Write the molecular formulae for the following compounds
Mercury (II) chloride
Write the molecular formulae of all the compounds that can be formed by the combination of the following ions
Cu2+, Na+, Fe3+, C1– , `"SO"_4^-2`, `"PO"_4^3-`
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 |
There is ______ oxygen atom is water molecule.
