Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Calcium nitrate
Advertisements
उत्तर
Calcium nitrate - Ca[NO3]2 - `"NO"_3^(1-)`
APPEARS IN
संबंधित प्रश्न
Write down the formulae for the following compounds :
Calcium oxide
Write down the formulae for the following compounds :
Magnesium hydroxide
Name the elements water is made of. What are the valencies of these elements ? Work out the chemical
formula for water.
If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.
An element X has a valency of 4 whereas another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed ?
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its phosphate ?
Give the formula and valency of:
aluminium ………………. .
Name the element in the compound and give the formula of the following compound:
Phosphoric acid
Write the formula of the following compound:
Potassium bisulphite
Write the formula of the following compound:
Sodium chloride
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Calcium hydroxide
Write the formula of the following compound:
Zinc carbonate
Write the formula of the following compound:
Aluminium oxide
Write the formula of the following compound:
Copper [I] oxide
Write the molecular formulae for the following compounds
Magnesium (II) acetate
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 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.
