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प्रश्न
Isotopes of an element have ______.
पर्याय
The same physical properties.
Different chemical properties.
Different numbers of neutrons.
Different atomic numbers.
उत्तर
Isotopes of an element have different numbers of neutrons.
Explanation:
The isotopes of an element have the same number of protons (the same atomic number) but different numbers of neutrons, leading to different atomic masses.
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संबंधित प्रश्न
What name is given to those atoms which contain the same number of protons and electrons but different number of neutrons?
What name is given to those isotopes which have unstable nuclei and emit various types of radiations ?
Explain why `""_1^3"H"` and `""_2^3"H"` are not considered isotopes.
(a) What are isotopes ? Explain by giving an example.
(b) Give one similarity and one difference between a pair of isotopes.
(c) Give the number of protons, neutrons and electrons per atom in the two isotopes of chlorine `""_17^35"Cl"` and `""_17^35"Cl"`.
The isotopes of an element contain :
Which of the following pairs are isotopes ? Give reasons for your choice :
(i) `""_26^58"A"`, `""_28^58"B"` or (ii) `""_35^79"X"`, `""_35^80"Y"`
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].
U-235 Isotope is used as ______.
Distinguish isotopes from isobar.
