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Na^+ has completely filled K and L shell...

`Na^+` has completely filled K and L shells. Explain.

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PSEB-Structure of the Atoms-EXERCISE
  1. Compare all the proposed models of atom given in the chapter 3 of the ...

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  2. Summarize the rules for writing of distribution of electrons in variou...

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  3. Define valency by taking examples of silicon and oxygen.

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  4. Explain with examples : Atomic number

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  5. Explain with examples : Mass number

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  6. Explain with examples : Isotopes

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  7. Explain with examples : Isobars.

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  8. Na^+ has completely filled K and L shells. Explain.

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  9. If bromine atom is in the form of say isotopes "35^79Br (49.7%) and "...

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  10. The average atomic mass of a sample of an element X is 16.2 u, what ar...

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  11. IfZ= 3, what would be the valency of the element ? Also, name the elem...

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

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  13. (true/false) J.J. Thomson proposed that the nucleus of an atom contain...

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  14. (true/false) A neutron is formed by an electron and a proton combining...

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  15. (true/false) The mass of an electron is about 1/2000 times that of pro...

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  16. (true/false) Isotope of iodine is used for making tincture iodine, whi...

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  17. Put tick (sqrt) against correct choice and cross (x) against wrong cho...

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  18. Put tick (sqrt) against correct choice and cross (x) against wrong cho...

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  19. Put tick (sqrt) against correct choice and cross (x) against wrong cho...

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

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