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प्रश्न
Define: Atomic weight :
उत्तर
Atomic weight : It is the ratio that tells how many times an atom of an element is heavier than atom of Hydrogen
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संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
Al2(SO4)3
Write down the name of a compound represented by the following formula:
CaCl2
Write down the name of a compound represented by the following formula:
KNO3
Give the name of the element present in the following compound:
Quick lime
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
Define: Atomic number
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 ?
What is the difference between the molecule of an element and the molecule of a compound ? Give one
example of each.
The cation of an element has :
Calculate the mass of 3.011 × 1024 atoms of carbon.
Correct the following statement:
A molecule of sulphur is monoatomic.
Give one example of a triatomic molecule
Give a reason why –
Ozone is considered triatomic, but phosphorus a tetratomic molecule.
State the atomicity of the following:
Neon
State the atomicity of the following:
Chlorine
State the atomicity of the following:
Argon
State true of false. If false, give the correct statement.
NaCl represents one molecule of sodium chloride.
Which of the following is a triatomic molecule?
Define: Atomicity.
Give any two examples for heterodiatomic molecules.
Which of the following contains maximum number of molecules?
Write any two classifications of a molecule.
