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प्रश्न
Write the formula of the following compound:
Magnesium nitrate
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उत्तर
Magnesium nitrate - Mg[NO3]2 - `"Mg"^(2+)["NO"]_3^(1-)`
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संबंधित प्रश्न
Write the chemical formula of the Magnesium chloride.
Write the chemical formula of the Copper nitrate.
Write down the formulae for the following compounds :
Calcium oxide
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 ?
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
Give the formula and valency of:
| Aluminate | ______ | ______ |
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
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 sulphate
Write the formula of the following compound:
Sodium aluminate
Write the formula of the following compound:
Sodium nitrite
Write the formula of the following compound:
Calcium sulphite
Write the formula of the following compound:
Aluminium nitrate
Write the formula of the following compound:
Iron [II] chloride
Define the term Relative molecular mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaCO3
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Mg(SO4)2
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
Write the molecular formulae for the following compounds
Calcium (II) phosphate
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.
