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What is the electronic configuration of ...

What is the electronic configuration of Ca ?
`1s^2 2s^2 2p^6 3s^2 3p^6 4s^2`
`[Ar]4s^2`
`[Ne] 3s^2 3p^6 4s^2`
`1s^2 2s^2 2p^6 3s^2 5s^2 3p^6`

A

a

B

b,c

C

a,c

D

a,b,c

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BEYOND PUBLICATION-STRUCTURE OF ATOM-EXERCISE
  1. When n = 2, l = 1, how many orbitals are there ? Name the sub-shell wh...

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  2. Write postulates and limitations of Bohr Hydrogen atomic model.

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  3. Orbitals having equal energies are

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  4. Which of the following spectrum is look like a finger prints ?

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  5. Splitting of spectral lines in the presence of electric field is calle...

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  6. For Manganese atom, assuming that Hund's rule is to valid for l=2 subs...

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  7. Degrenerate orbitals means

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  8. Velocity of light in vacuum is given by the formula……….

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  9. Filling of electrons in an orbital of sub-shells is given by

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  10. E = hnu is given by

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  11. Identify the wrong set of quantum numbers from the following.

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  12. Electron emits energy if it jumps form ……to …………energy state

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  13. Elliptical orbits were introduced by……….

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  14. Sommerfeld added………..elloptical orbits to each Bohr's circular orbit

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  15. An orbital with m = +3 has an unpaired electron. If it is the only unp...

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  16. What is the electronic configuration of Ca ? 1s^2 2s^2 2p^6 3s^2 3p^6...

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  17. Wite two sentences about the wavelengths of colours in rainbow ?

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  18. How can you say that VIBGYOR have different wavelength ?

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  19. Where do we see the radio waves ?

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  20. Why does on element emit light, when it is heated ?

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