Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Magnesium nitrate
Advertisements
उत्तर
Magnesium nitrate - Mg[NO3]2 - `"Mg"^(2+)["NO"]_3^(1-)`
APPEARS IN
संबंधित प्रश्न
An element Z has a valency of 3. What is the formula of oxide of Z ?
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.
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 ?
Identify the following substance:
Gas B that has an offensive smell as of rotten eggs.
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
Name the element in the compound and give the formula of the following compound:
Blue vitriol
Write the formula of the following compound:
Potassium permanganate
Write the formula of the following compound:
Potassium sulphate
Write the formula of the following compound:
Potassium aluminate
Write the formula of the following compound:
Calcium carbonate
Write the formula of the following compound:
Calcium sulphate
Write the formula of the following compound:
Magnesium bicarbonate
Write the formula of the following compound:
Aluminium nitrate
Write the formula of the following compound:
Copper [I] chloride
Write the formula of the following compound:
Iron [II] oxide
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.
BaCl2
Write the molecular formulae for the following compounds
Mercury (II) chloride
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.
