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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
Fill in the blank
The ..........................of an atom is very hard and dense.
Draw the diagrams representing the atomic structures of the following: Nitrogen.
Complete the table below by identifying A, B, C, D, E and F.
FILL IN THE BLANK
Nuclear energy can be used to make ..........................
Tick the most appropriate answer
Which one of the following scientists put forward the theory regarding the extra-nuclear structure of the atom?
- James Chadwick
- John Dalton
- Rutherford
- Niels Bohr
WRITE SHORT ANSWER
What is the central part of an atom known as?
How was it shown that atom has empty space?
Which metal did rutherford select for his `alpha` particle scattering experiment and why?
What is meant by the term nucleus
Differentiate between the following term:
Nucleus and nucleons
