Advertisements
Advertisements
Question
Write the molecular formulae for the following compounds
Mercury (II) chloride
Advertisements
Solution
Mercury(II) chloride – HgCl2
APPEARS IN
RELATED QUESTIONS
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
What is the difference between 2H and H2 ?
If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Sodium bicarbonate
Write the formula of the following compound:
Copper [I] oxide
Write the formula of the following compound:
Iron [III] hydroxide
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.
What do you understand by chemical formula of a compound? What is its significance?
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.
