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प्रश्न
What is the reason for the slightly different physical properties of all the isotopes of an element ?
उत्तर
The mass numbers of the isotopes of an element are slightly different. So, the physical properties of isotopes are slightly different from each other.
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संबंधित प्रश्न
State one use of radioactive isotopes in medicine.
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?
Explain why, the atomic masses of many elements are in fractions and not whole numbers.
(a) What are radioactive isotopes ? Give two examples of radioactive isotopes.
(b) Give any two uses of radioactive isotopes.
(c) An element Z contains two naturally occurring isotopes `""_17^35"Z"` and `""_17^37"Z"`. If the average atomic mass of this element be 35.5 u, calculate the percentage of two isotopes.
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 isotopes of an element contain :
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.
Select the correct answer from the answer in the bracket to complete the sentence.
Isotopes have same _________.
______ is a radioactive isotope present in our body.
Distinguish isotopes from isobar.
