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प्रश्न
Write the formula of the following compound:
Zinc sulphate
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उत्तर
Zinc sulphate - ZnSO4 - `"Zn"^(2+)["SO"_4]^(2-)`
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संबंधित प्रश्न
Write down the formulae of sodium sulphide.
Write the chemical formula of the Calcium carbonate.
What is meant by the symbol of an element ? Explain with examples.
What is meant by a chemical formula ? Write the formulae of one element and one compound.
If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound ?
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its phosphate ?
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
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 |
Name the element in the compound and give the formula of the following compound:
Phosphoric acid
Name the element in the compound and give the formula of the following compound:
Glauber’s salt
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Magnesium bicarbonate
Write the formula of the following compound:
Zinc hydroxide
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Iron [III] sulphide
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
Write the steps that are followed to write down the chemical formula of a substance.
