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प्रश्न
Define: Mass number :
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उत्तर
Mass number : Numbr of protons and neutrons present in the nucleus of an atom.
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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:
KNO3
Give the name of the element present in the following compound:
Hydrogen bromide
Give the name of the element present in the following compound:
Potassium sulphate
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
State the term.
The number of atoms present in a molecule of an element _________
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What is the atomicity of the following ?
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- Ozone
- Neon
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- What conclusion do you get from the comparison of masses of products and reactant ?
- Which law of chemical combination is illustrated by the example given in this problem ?
Work out the formula for magnesium hydrogencarbonate.
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State the three valencies of element X which are illustrated by these compounds.
Give one example of a polyatomic molecule.
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Neon
State the atomicity of the following:
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State the atomicity of the following:
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State the atomicity of the following:
Argon
Which of the following is a short and scientific way of representing one molecule of an element or compound?
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?
Two elements sometimes can form more than one compound.
Define: Atomicity.
Derive the relationship between Relative molecular mass and Vapour density.
