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4s orbitals has less energy than 3d orbi...

`4s` orbitals has less energy than `3d` orbital

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Statement 1. 4s orbital has lower energy than 3d orbital. Statement 2. s-orbital is spherically symmetrical and remains closer to the nucleus and has lower energy than d-orbital.

The enrgy level fo 4s-orbital is less than 3d- orbital because :

In a hydrogen atom, which orbital is higher in energy than a 3s-orbital?

Assertion: The first ionisation energy of Be is greater than that of B . Reason: 2p-orbital is lower in energy than 2s-orbital.

CENGAGE CHEMISTRY-ATOMIC STRUCTURE-Exercises True And False
  1. The azimuthal quantum, number (l) determines the energy level of the s...

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  2. e//m ratio of proton is greater than that of electron

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  3. p(x) orbital , is symetrical about x -axis

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  4. In an orbital, maximum two electron can be accomodated

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  5. psi^ (2) determine the probability of finding the electron in particul...

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  6. All Emr travel with speed of light

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  7. The s orbital is spectrical in shape

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  8. For ant two electrons in an atom, the set of all four quantum numkber...

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  9. Half-filled and fully-filled orbital orbitals are more stable

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  10. The orbital angular momentum of a p electron is equal to sqrt(2) (h)/(...

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  11. The position and velocity of an can be determined precisely

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  12. The magnetic quantum number gives the orientation of electron clouds ...

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  13. The electron distribution is sheprically symmerical for l = 2

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  14. For hydrogen atom , the energies of the sub-shells 4s ,4p, 4d and 4f a...

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  15. 3s orbital has three nodes

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  16. 4s orbitals has less energy than 3d orbital

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  17. The order of sheiding effect for different orbital is s gt p gt d gt ...

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  18. The 3g orbital is not possible

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  19. A single photon excites only a single electron

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  20. An electron can absorb more than one photon simultaneously .

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