CBSE Class 9 - Parameters of an Atom Videos
Atomic Number and Mass Number - Exam Decoded
This video contains questions on atomic and mass numbers, isotopes and isobars.
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Subatomic Particles - Part 1
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Subatomic Particles - Part 2
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Structure of Atom - Exam Decoded - 1
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Rutherford's Model of an Atom - Part 1
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Rutherford's Model of an Atom - Part 2
- What is meaning of phosphorus
- how we define ions
- who discovered electron, proton and neutron
- what are isotopes?
- Sir how find atomic mass in element
- Define atomic number. How is it denoted? Give two examples of atomic numbers.
- What determines the chemical properties of an element?
- What determines the mass number of an atom?
- Define mass number.
- Write any three uses of isotopes.
