Q. What is the smallest unit of matter that retains the properties of an element?
पदार्थ की सबसे छोटी इकाई क्या है जो किसी तत्व के गुणों को बरकरार रखती है?
Explanation
An atom is the basic unit of an element, retaining its chemical properties.
It consists of protons, neutrons, and electrons.
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