Advertisements
Advertisements
Question
Write the formula of the following compound:
Sodium chloride
Solution
Sodium chloride - NaCl - `"Na"^(1+)"Cl"^(1-)`
APPEARS IN
RELATED QUESTIONS
Explain the difference between 2N and N2.
The atomicities of ozone, sulphur, phosphorus and argon are respectively :
Give the formula and valency of:
cupric ………………… .
Identify the following substance:
Gas B that has an offensive smell as of rotten eggs.
Name the element in the compound and give the formula of the following compound:
Blue vitriol
Write the formula of the following compound:
Potassium aluminate
Write the formula of the following compound:
Sodium permanganate
Write the formula of the following compound:
Calcium bicarbonate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Iron [III] sulphate
Write the formula of the following compound:
Iron [II] sulphide
Write the formula of the following compound:
Iron [III] sulphide
Write the formula of the following compound:
Iron [III] hydroxide
Write the molecular formulae for the following compounds
Copper (II) bromide
Write the molecular formulae for the following compounds
Iron (III) sulphide
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-`
Write the steps that are followed to write down the chemical formula of a substance.
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
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.
