मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Explain the Term ‘Atomicity’.

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प्रश्न

Explain the term ‘atomicity’.

एका वाक्यात उत्तर
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उत्तर

It is the number of atoms present in a molecule of an element.

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पाठ 4: Atomic Structure - Exercise

संबंधित प्रश्‍न

How many atoms are present in a H2S molecule?


What does 6NaNO3 represent ?


Write the molecular formulae of Iron (II) sulphide :


Write the molecular formulae of Iron (III) sulphide:


Write the molecular formulae of Nitric acide :


Write the molecular formulae of Calcium phosphate :


The valency of sodium is one, write the molecular formula for sodium oxide ?


State the term

A group of atoms that react as a single unit ______.


In hydrogen peroxide (H2O2), the proportion of hydrogen and oxygen by mass is :


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)


If 1 gram of sulphur dioxide contains x molecules, how many molecules will be present in 1 gram of oxygen ?

(S = 32 u ; O = 16 u)


How many units of charge are developed on each atom?


Diagrammatically represent the transfer of electrons.


‘Atoms of the same element or different from Dalton’s atomic theory by the Modern Atomic Theory.
Give two examples each of –

  • Atoms of the same element
  • Atoms of different elements combining to form a molecule.

Fill in the blank:

The formula of aluminium sulphate is _________.


State the correct formula of the following from the option given:

Calcium hydroxide


State the correct formula of the following from the option given:

Copper [II] nitrate


Molecule containing more than three atoms are known as ______.


Calculate the number of water molecules present in one drop of water which weighs 0.18 g.


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