Which of the following about Atoms is NOT correct?

Atoms are capable of an independent existence under ordinary conditions.

The correct answer is Option (3) → Atoms are capable of an independent existence under ordinary conditions.

• Atom is very small, smaller than anything that we can imagine. This is correct. Atoms are extremely small and form the basic building blocks of matter.

• Atoms can not usually exist independently and retain all their chemical properties. This is also correct. Most atoms combine with other atoms to form molecules. Only noble gases (like helium, neon) exist independently under ordinary conditions.

• Atoms are capable of an independent existence under ordinary conditions. This is not correct. Most atoms are reactive and do not exist alone under normal conditions. They bond with other atoms to achieve stability.

• The entire world is made of atoms. This is correct. Everything around us is composed of atoms.