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प्रश्न
State the atomicity of the following:
Argon
उत्तर
Monoatomic
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संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
K2SO4
Give the name of the element present in the following compound:
Baking powder
Give the name of the element present in the following compound:
Potassium sulphate
Define: Atomic number
Define: Mass number :
Define: Atomic weight :
What is the atomicity of the following ?
- Oxygen
- Ozone
- Neon
- Sulphur
- Phosphorus
- Sodium
Write the formulae of the following compounds. Also name the elements present in them.
- Water
- Ammonia
- Methane
- Sulphur dioxide
- Ethanol
In what form does oxygen gas occur in nature ?
Work out the formula for magnesium hydrogencarbonate.
What are (i) ionic compounds, and (ii) molecular compounds ? Give two examples of each type of compounds.
The cation of an element has :
An element A forms an oxide A2O5.
What is the valency of element A ?
An element X forms the following compounds with hydrogen, carbon and oxygen :
H2X, CX2, XO2, XO3
State the three valencies of element X which are illustrated by these compounds.
Correct the following statement:
A molecule of sulphur is monoatomic.
Why are the symbols and formulae of substances important?
Explain the term – molecules. Give three examples of atoms of the same element forming a molecule. State the atomicity of the same.
Give one example of a triatomic molecule
Give a reason why –
Helium is considered monoatomic, but hydrogen a diatomic molecule.
State the atomicity of the following:
Oxygen
State the atomicity of the following:
Sulphur
Which of the following is a short and scientific way of representing one molecule of an element or compound?
The Atomicity of phosphorous is ______
Define: Atomicity.
Derive the relationship between Relative molecular mass and Vapour density.
Which of the following contains maximum number of molecules?
