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प्रश्न
Give one example of a radioactive isotope which is used as a fuel in the reactors of nuclear power plants.
उत्तर
Uranium-235 is used as a fuel in the reactors of nuclear power plants.
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संबंधित प्रश्न
Explain why, the atomic masses of many elements are in fractions and not whole numbers.
In a sample of ethyl ethanoate (CH3COOC2H5), the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it ?
The number of protons, neutrons and electrons in particles A to E are given below :
| Particle | Protons | Neutrons | Electrons |
| A | 17 | 18 | 17 |
| B | 3 | 4 | 2 |
| C | 18 | 22 | 18 |
| D | 17 | 20 | 17 |
| E | 9 | 10 | 10 |
Giving reasons, find a pair of isotopes from the above particles.
Chlorine is an element of atomic number 17. It is a mixture of two isotopes having mass number of 35 and 37.
- What is meant by “atomic number of an element”? What do you understand by an ‘atom’
- Write down the electronic configuration of the chlorine atom.
- State the number of protons, electrons, and neutrons in the following isotopes: 35Cl17, 37Cl17
- Explain why the two atoms in (iii) above have the same chemical reactions.
- If molten magnesium chloride is electrolyzed suggest a suitable electrode [anode].
Select the correct answer from the answer in the bracket to complete the sentence.
Isotopes have same _________.
Name or state the following.
The three isotopes of hydrogen.
______ is a radioactive isotope present in our body.
Isotopes of elements have the same chemical properties.
Explain radioactive decay and radioactive isotopes.
Distinguish isotopes from isobar.
