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The number of valence electrons in Alumi...

The number of valence electrons in Aluminium is

A

1

B

2

C

3

D

4

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE-STRUCTURE OF ATOM -ASSIGNMENT ( SECTION -A) Objective Type Questions (One option is correct)
  1. The formula for Heisenberg's uncertainty principle is

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  2. Who first time ruled out the existence of definite paths of electrons ...

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  3. Probability density is given by

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  4. The possible values of magnetic quantum number for p-orbital are

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  5. The notation of orbital with n=5 and l=3 is

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  6. The possible valuesof m(l)in a givensubshell are given by the formula

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  7. The shape of rho- orbital is

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  8. In multi-electron atom 4s-orbital is lower in energy than

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  9. The main energy shell in which the electron is present is given by

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  10. Shape of an orbital is given by

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  11. Orientation of orbitals is given by

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  12. Which one of the following orbitals is spherical in shape ?

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  13. The number of valence electrons in Aluminium is

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  14. Forn=4 , which one of the following values of l is not possible ?

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  15. The number of electrons present in 3d of Cu^(o+) is

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  16. The maximum number of electrons that can be accomoddated in d(x^(2)-y^...

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  17. The number of unpaired electrons in magnesium atom is

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  18. The correct sequence of energy of orbitals of multielectron species i...

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  19. The maximum number of unpaired electrons can present in p(x) orbital i...

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  20. The number of electrons present in 'M' shell of silicon is

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