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प्रश्न
Give the reason why isotopes have the same chemical but different physical properties.
उत्तर
Chemical properties are the same because they have the same atomic number hence the same number of valence electron's physical properties are different because they have different mass numbers.
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संबंधित प्रश्न
What name is given to those isotopes which have unstable nuclei and emit various types of radiations ?
Complete the following statements :
Isotopes have different mass numbers because their nuclei contain different number of ............
Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass numbers are called .............
The isotopes of an element contain :
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.
What are isotopes? With reference to which fundamental particle do isotopes differ? Give two uses of isotopes.
What are isotones? Give one example.
Name the radioactive isotope used to find the age of fossils. Name the radioactive radiation which it emits?
In two isotopic species, a number of protons is the same but the number of ______ is different.
List the uses of isotopes.
Distinguish isotopes from isobar.
