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प्रश्न
Write the formula of the following compound:
Aluminium nitrate
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उत्तर
Aluminium nitrate - Al[NO3]3 - `"Al"^(3+)"NO"_3^(1-)`
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संबंधित प्रश्न
An element Z has a valency of 3. What is the formula of oxide of Z ?
If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.
Give the formula and valency of:
| Aluminate | ______ | ______ |
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 |
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Write the formula of the following compound:
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Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them. (You may use appendix-III).
- Ammonia
- Carbon monoxide
- (Hydrogen chloride
- Aluminium fluoride
- Magnesium sulphide
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
