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प्रश्न
Write the formula of the following compound:
Copper [I] sulphide
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उत्तर
Copper [I] sulphide - Cu2S - `"Cu"^(1+)"S"^(2-)`
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संबंधित प्रश्न
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
Name the elements water is made of. What are the valencies of these elements ? Work out the chemical
formula for water.
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
Correct the following statement:
Formula of iron (lll) oxide is FeO.
Identify the following substance:
A brown gas D with the irritating smell.
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:
Potassium hydroxide
Write the formula of the following compound:
Sodium chloride
Write the formula of the following compound:
Sodium bicarbonate
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:
Lead [II] oxide
Write the formula of the following compound:
Lead [II] hydroxide
Write the formula of the following compound:
Silver [II] chloride
Define the term Relative atomic mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
Write the chemical formula for the following elements.
- Hydrogen
- Nitrogen
- Ozone
- Sulphur
Write the chemical formula for the following compounds
- Aluminium sulphate
- Silver nitrate
- Magnesium oxide
- Barium chloride
Which of the following represents a correct chemical formula? Name it.
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-`
What is a chemical formula?
