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प्रश्न
Fill in the blank:
A molecule of an element is _________.
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उत्तर
A molecule of an element is chorine.
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संबंधित प्रश्न
What does 2C02 represent ?
What does 2H2S represent ?
Write the molecular formulae of Iron (II) sulphide :
Write the molecular formulae of Iron (III) sulphide:
Fill in the following blanks :
1 mole contains .............. atoms, molecules or ions of a substance.
If one mole of nitrogen molecules weighs 28 g, calculate the mass of one molecule of nitrogen in grams.
Calculate the number of molecules present in a drop of chloroform (CHCl3) weighing 0.0239 g.
(Atomic masses : C = 12 u ; H = 1 u ; Cl = 35.5 u)
Explain the term ‘atomicity’.
‘Dilute hydrochloric acid is added to sodium hydroxide’. Give a word equation and a molecular equation of the same. Is the equation written, a balanced equation. Give reasons.
State the correct formula of the following from the option given:
Sodium bisulphite
State the correct formula of the following from the option given:
Aluminium phosphate
State true of false. If false, give the correct statement.
Atoms cannot exist alone. They can only exist as groups called molecules.
What is the fraction of the mass of water due to neutrons?
Express each of the following in kilograms
5.84 × 10−3 mg
Express each of the following in kilograms
58.34 g
Express each of the following in kilograms
0.584 g
Express each of the following in kilograms
58.34 g
