Question

Which of the following statements is not true about an atom?

• A. Atoms are not able to exist independently
• B. Atoms are the basic units from which molecules and ions are formed
• C. Atoms are always neutral in nature
• D. Atoms aggregate in large numbers to form the matter that we can see, feel or touch

Answer 1

The correct option is A

Atoms are not able to exist independently

The explanation for the correct options:

(A)Atoms are not able to exist independently.

• Atoms can accept or donate electrons to form a stable electronic configuration.
• It results in the formation of the molecule.
• Only inert gases, on the other hand, already have octet-filled configurations, allowing them to exist as atoms.

The explanation for the incorrect options:

(B)Atoms are the basic units from which molecules and ions are formed.

• Two or more two atoms are combined and form a molecule.
• These atoms can be the same or different and based on that the molecules can be homonuclear or heteronuclear molecules.
• When an atom accepts or donates electrons it forms ions.

(C)Atoms are always neutral in nature.

• An atom has an equal number of protons and electrons.
• So atoms are always neutral in nature.

(D)Atoms aggregate in large numbers to form the matter that we can see, feel or touch.

• Atoms are very small in size, so can not be seen by naked eyes.
• When atoms are aggregated in large numbers to form matter then we can see, feel or touch.

Hence, option (A) is correct., atoms are not able to exist independently is not true about an atom.