Atoms


 
 
Concept Explanation
 

Atoms

ATOMS: Atoms are the smallest particles of an element which may have or may not have independent existence but take part in a chemical reaction. These are the building blocks of all matter.

Atoms may or may not exist by themselves:

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Sample Questions
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Question : 1

Arrange the points in sequence to draw the geometrical representation of an atom which is represented As large Z^X^A.

(a) Calculation of the number of protons and neutrons.

(b) identification of the atomic number and mass number of the given element.

(c) Placement of the electrons in shells around the nucleus according to the electronic configuration.

(d) Writing the electronic configuration of the atom.

(e) Protons and neutrons are shown in nucleus.

Right Option : A
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Question : 2

Which of the following are correct :

(a) Atoms are the smallest particles of an element.

(b) Atoms are the building blocks of all matter.

(c) Atoms are the biggest particles of an element

Right Option : A
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Explanation
Question : 3

Which of the following are formed by the one atom?

(a) Water

(b) Gold

(c) Salt

(d) Iron

Right Option : B
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