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Number of valence electrons in Cl^(– ) i...

Number of valence electrons in `Cl^(– )` ion are:

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(d) `CI^(-)` ion has 18 electrons (17+1)
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DINESH PUBLICATION-STRUCTURE OF ATOM -N.C.E.R.T End Exercise
  1. Compare the properties of electrons, protons and neutrons.

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  2. What are the limitations of J.J. Thomson’s model of the atom?

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  3. What are the limitations of Rutherford's model of the atom ?

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  4. What are the postulates of Bohr's model of an atom?

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  5. Compare all the proposed models of an atom given in this chapter.

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  6. Summarise the rules for writing the distributiion of electones in vari...

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  7. Define valency by taking the examples of silicon and oxygen.

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  8. Explain with examples (i) Atomic number (ii) Mass number (iii) Isotope...

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  9. Na^(+) has completely filled K and L shells. Explain.

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  10. Bromine occurs in nature mainly in the form of two isotopes .(35)^(79)...

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  11. The average atomic mass of a sample of an element X is 16.2 mu. What i...

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  12. If Z = 3, what would be the valency of the element? Also, name the ele...

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  13. Composition of the nuclei of two atomic species X and Y are given as u...

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  14. For the following statements, write T for true and F for false : (a)...

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  15. Rutherford's alpha particle scattering experiment was responsible for ...

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  16. Isotopes of an element have : (a) the same physical properties (b)...

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  17. Number of valence electrons in Cl^(– ) ion are:

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  18. Which one of the following is a correct electronic configuration of so...

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  19. Complete the following table:

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