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प्रश्न
State one use of radioactive isotopes in medicine.
उत्तर
Radioactive isotopes are used as tracers in medicine to detect the presence of tumours and blood clots.
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संबंधित प्रश्न
Fill in the blanks of the following statement :
An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of the atom is ___________.
What is the relationship between an atom containing 11 protons, 11 electrons and 11 neutrons, and another atom containing 11 protons, 11 electrons and 12 neutrons?
What name is given to those isotopes which have unstable nuclei and emit various types of radiations ?
Give one use each of the following radioactive isotopes :
(a) Uranium-235
(b) Cobalt-60
What is the reason for the different atomic masses of the isotopes of an element ?
What is the reason for the identical chemical properties of all the isotopes of an element ? Explain with the help of an example.
Hydrogen has three isotopes written as :
`""_1^1"H"` `""_1^2"H"` `""_1^3"H"`
Explain why :
(i) these isotopes have almost identical chemical properties.
(ii) they are electrically neutral.
(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"`.
What are isotopes?
Four elements A, B, C, D are given :
- A shows the presence of 20 neutrons, 17 protons and 17 electrons.
- B shows the presence of 18 neutrons, 17 protons and 17 electrons.
- C shows the presence of 10 neutrons, 9 protons and 10 electrons.
- D shows the presence of 4 neutrons, 3 protons and 2 electrons.
State which of the above is –
- an anion
- a cation
- a pair of isotopes.
Write the formula of the compound formed between D and C.
