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प्रश्न
Write the formula of the following compound:
Sodium aluminate
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उत्तर
Sodium aluminate - NaAlO2 - `"AlO"_2^(1-)`
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संबंधित प्रश्न
Write down the formulae of sodium oxide.
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
Name the following compounds. Also write the symbols/formulae of the ions present in them :
- CuSO4
- (NH4)2SO4
- Na2O
- Na2CO3
- CaCl2
What is a chemical formula? What is the significance of a formula?give an example to illustrate?
XCl2 is the chloride of a metal X. State the formula of the sulphate and the hydroxide of the metal X.
Name the element in the compound and give the formula of the following compound:
Acetic acid
Name the element in the compound and give the formula of the following compound:
Blue vitriol
Write the formula of the following compound:
Sodium nitrate
Write the formula of the following compound:
Sodium dichromate
Write the formula of the following compound:
Calcium sulphate
Write the formula of the following compound:
Zinc sulphate
Write the formula of the following compound:
Aluminium carbonate
Write the formula of the following compound:
Copper [I] oxide
Write the formula of the following compound:
Lead [II] hydroxide
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
Calcium (II) phosphate
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?
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.
