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प्रश्न
Write the formula of the following compound:
Aluminium nitrate
उत्तर
Aluminium nitrate - Al[NO3]3 - `"Al"^(3+)"NO"_3^(1-)`
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संबंधित प्रश्न
Write down the formulae of sodium oxide.
The formula of a compound is X3Y. The valencies of elements X and Y will be respectively :
Correct the following statement:
A molecular formula represents an element.
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:
Glauber’s salt
Write the formula of the following compound:
Potassium permanganate
Write the formula of the following compound:
Potassium aluminate
Write the formula of the following compound:
Zinc hydroxide
Write the formula of the following compound:
Copper [I] chloride
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Copper [II] nitrate
Write the formula of the following compound:
Iron [III] sulphate
Write the formula of the following compound:
Lead [II] chloride
Write the formula of the following compound:
Diamine silver chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
KNO3
Which of the following represents a correct chemical formula? Name it.
BiPO4
Write the molecular formulae for the following compounds
Calcium (II) phosphate
Write the molecular formulae for the following compounds
Iron (III) sulphide
There are ______ hydrogen atoms in water molecule.
Play a game for writing formula.
Example 2: A low-cost model for writing formulae: Take empty blister packs of medicines. Cut them in groups according to the valency of the element, as shown in the figure. Now, you can make formulae by fixing one type of ion into other.
For example:
The formula for sodium sulphate:
2 sodium ions can be fixed on one sulphate ion.
Hence, the formula will be Na2SO4.
Do it yourself:
Now, write the formula of sodium phosphate.
