Characteristics of Atoms


 
 
Concept Explanation
 

Characteristics of Atoms

Atom and Characteristics of Atom : Smallest particle of an element which shows all properties of element is called atom. Some characteristics of "atoms" are as follows:

  • Atom takes part in chemical reactions independently.
  • Atom can be divided into a number of sub-atomic particles.
  • Fundamental particles of atom are electron, proton and neutron.
  • The properties of a matter depend on characteristic of atoms.
  • The size of atoms is indicated by its radius.
  • In ancient time atoms was considered indivisible.
  • The protons in the nucleus is the atomic number of this atom.
  • The number of protons is equal to the number of electrons.
  • Sample Questions
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    Question : 1

    Which of the following are correct :

    (a) The number of protons is equal to the number of electrons.

    (b) Fundamental particles of atom are electron.

    (c) In ancient time atoms was considered divisible.

    (d) The size of atoms is indicated by its radius.

    Right Option : D
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    Question : 2

    What are the fundamental particles of atom ?

     

    Right Option : D
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    Explanation
    Question : 3

    The size of atoms is indicated by its _________.

    Right Option : C
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