Science: Class IX>Chapter 4 - Structure of the Atom>Questions

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Author:Jharkhand Board

Jharkhand Board Science Solutions for Exercise - Questions

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EASY

9th Jharkhand Board

IMPORTANT

Science: Class IX>Chapter 4 - Structure of the Atom>Questions>Q 1

Name the three sub-atomic particles of an atom.

EASY

9th Jharkhand Board

IMPORTANT

Science: Class IX>Chapter 4 - Structure of the Atom>Questions>Q 2

Helium atom has an atomic mass of $4 u$ and two protons in its nucleus. How many neutrons does it have?