Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Potassium bicarbonate
Advertisements
उत्तर
Potassium bicarbonate - KHCO3 - `["HCO"_3]^(1-)`
APPEARS IN
संबंधित प्रश्न
Write down the formulae of sodium sulphide.
Write down the formulae of magnesium hydroxide.
What is meant by the symbol of an element ? Explain with examples.
What is meant by a chemical formula ? Write the formulae of one element and one compound.
What do the symbols, H2, S and O4 mean in the formula H2SO4 ?
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element Z has a valency of 3. What is the formula of oxide of Z ?
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 Y has a valency of 4. Write the formula for its :
- chloride
- oxide
- sulphate
- carbonate
- nitrate
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
Give the formula and valency of:
| Aluminate | ______ | ______ |
Write the formula of the following compound:
Sodium bisulphite
Write the formula of the following compound:
Calcium hydroxide
Write the formula of the following compound:
Iron [II] hydroxide
Write the formula of the following compound:
Lead [II] hydroxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaZnO2
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaCO3
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
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.
