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

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

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The correct Answer is:
(True)
Aufbau principle.
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VMC MODULES ENGLISH-ATOMIC STRUCTURE-JEE Advanced (Archive )
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  4. gamma -rays are electromagnetic radiation of wavelength of 10^(-6)" t...

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  7. The principal quantum number of an atom is related in the

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  13. Bohr's model can explain

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  14. Electromagnetic radiation with maximum wavelengths is :

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  15. The radius of an atomic nucleus is of the order of:

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  17. The electron density in the xy plane in 3d(x^(2) - y^(2)) orbital is z...

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