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प्रश्न
How does the existence of isotopes contradict Dalton’s atomic theory?
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उत्तर
- Atoms are not indivisible, they can be further divided into fundamental particles electrons, protons and neutrons.
- Every atom of an element is not identical. Isotopes are the atoms of same element with same atomic number but different mass number, that means they have same number of protons and electrons but differ in their number of neutrons.
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संबंधित प्रश्न
Give the following a suitable word/phrase.
The number of protons present in the nucleus of an atom.
Multiple Choice Questions
The number of electrons in an atom is equal to number of
Draw the diagrams representing the atomic structures of the following: Nitrogen.
Complete the table below by identifying A, B, C, D, E and F.
On the basis of Rutherford's model of an atom, which subatomic particle is present in the nucleus of an atom?
State one major drawback of Rutherford's model.
What are nucleons? How many nucleons are present in phosphorus? Draw its structure.
Explain in brief – Lod Rutherford’s experiment which led to the discovery of the atomic nucleus.
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
Differentiate between the following term:
Nucleus and nucleons
