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CBSE Class 9 Answered

is atom the smallest part of an element?
Asked by demo 9 | 13 Feb, 2014, 04:07: PM
Expert Answer

An atom is the smallest particle of an element that has the properties of that element. An atom is comprised of a nucleus containing protons and neutrons and is surrounded by charged particles called electrons.


Soon after, quarks and leptons were discovered and till now these are considered as the smallest particles of matter.

Leptons

These are particles such as muons and electrons.

Quarks

Quarks are believed to be the basic building blocks of protons, neutrons and a wide variety of other, heavier particles, collectively called hadrons. 

Mesons are subatomic particles composed of one quark and one antiquark.

Answered by | 14 Feb, 2014, 10:39: AM
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