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प्रश्न
What name is given to those isotopes which have unstable nuclei and emit various types of radiations ?
उत्तर
Radioactive isotopes are the isotopes that have unstable nuclei and emit various types of radiation.
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संबंधित प्रश्न
Name the Radioactive Isotope Which is Used in the Treatment of Cancer.
Explain why, the atomic masses of many elements are in fractions and not whole numbers.
(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 composition of two atomic particles is given below :
| X | Y | |
| Protons : | 8 | 8 |
| Neutrons : | 8 | 9 |
| Electrons : | 8 | 8 |
(i) What is the mass number of X ?
(ii) What is the mass number of Y ?
(iii) What is the relation between X and Y ?
(iv) Which element/elements do they represent ?
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.
State true or false. If false, correct the statement.
Isotopes of an element have different atomic numbers.
Identify the pairs which are not of isotopes?
(i) 126X, 136Y
(ii) 3517X, 3717Y
(iii) 146X, 147Y
(iv) 84X, 85Y
In two isotopic species, a number of protons is the same but the number of ______ is different.
How is the radioactivity of a radio isotope affected if it undergoes a chemical change? Give a reason for your answer.
