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What name is given to those isotopes whi...

What name is given to those isotopes which have unstable nuclei and emit various types of radiations ?

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Radioactive isotopes
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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. What is the relationship between an atom containing 11 protons, 11 ele...

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  2. What name is given to the pair of atoms such as .(7)^(14) N and .(7)^(...

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  3. What name is given to those isotopes which have unstable nuclei and em...

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  4. Fill in the following blanks in respect of an atom of an element :

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  5. Complete the following statements : (a) Magnesium has 2 valence elec...

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  6. The nucleus of an atom has 5 protons and 6 neutrons. What would be the...

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  7. Write the electronic configuration of the element with atomic number ...

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  8. The atomic number of an element X is 16 (a) Write down the electric ...

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  9. What valencies will be shown by the elements A, B, C, D and E having a...

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  10. Give one use each of the follwing radioactive isotopes : (a) Uranium...

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  11. Explain why .(1)^(3)H and .(2)^(3)He are not considered isotopes

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  12. What is the reason for the different atomic masses of the isotopes of ...

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  13. What is the reason for the identical chemical properties of all the is...

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  14. What is the reason for the slightly different physical properties of a...

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  15. Explain why, the atomic masses of many elements are in fractions and n...

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  16. Which of the following are isotopes and which are isobars ? Argon, D...

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  17. Hydrogen has three isotopes written as : .(1)^(1)H,.(1)^(2)H,.(1)^(3...

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  18. Given that the percentage abundance of the isotope .(10)^(20)N is 90 %...

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  19. What are isobars ? Explain with an example.

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  20. For the symbol H,D and T tabulate three sub-atomic particles found in ...

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