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The number of electrons in the valence s...

The number of electrons in the valence shell of an atom cannot be ...... .

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MBD-STRCTURE OF ATOM-Example
  1. Isotope of which element is used in atomic reactor?

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  2. Isotope of which element is used for the treatment of goitre ?

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  3. What are isobars ?

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  4. Give one example of isobars ?

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  5. Write three isotopes of hydrogen.

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  6. What is the total number of electrons in an atom if its K-and L-shells...

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  7. What electrons in an atom influence its chemical properties ?

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  8. How will you represent chlorine atom having mass number 35 and atomic ...

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  9. Name the sub-atomic particle on which size of an atom depends ?

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  10. Name the atoms having same atomic number but different mass numbers

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  11. Mg^(2+) has 10 electrons What is the number of protons in it?

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  12. Name the element which has no neutrons in the nucleus of its atom.

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  13. Out of electrons, protons and neutrons, which are same in isotopes ?

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  14. There are three isotopes of hydrogen "1^1H , "1^2H, "1^3H all are elec...

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  15. An element has atomic number 16. Give its electronic configuration and...

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  16. The number of electrons in the valence shell of sodium (Na) is........

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  17. Fluorine belongs to...... Family.

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  18. In an atom, the number of......is the same as number of..... .

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  19. Isotopes of an element are.......because they have...... number of el...

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  20. The number of electrons in the valence shell of an atom cannot be .......

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