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प्रश्न
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
उत्तर
Step 1: Write the symbols of the radicals.
H Cl
Step 2: Write the valency below the respective radical.
H Cl
1 1
Step 3: Cross-multiply symbols of radicals with their respective valency.
Step 4: Write down the chemical formula of the compound.
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
pressure.
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
Explain the following reaction with one suitable example of Decomposition reaction
Give an example of the following chemical change.
Two gases combine to form white solid
Name: Two nitrates that do not produce nitrogen dioxide on heating.
Distinguish by heating the following in dry test tubs.
Zinc carbonate, Copper carbonate and lead carbonate.
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Addition of dilute acid to an active metal.
Differentiate between the following:
Neutralization reaction and a precipitation reaction.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
Can a nickel spatula be used to stir copper sulphate solution? Justify your answer.
