The electrons in a poly -electronic atom are filled one by one in roder fo increasing energy level . The enrgy fo subsgells and orientation depeds upon the values of three quantum numbers 9 i.e., n. l and m respectively derived from Schrodinger wave equation . The different orbitals fo a subsshells however possess same energy level and are called degenerater orbitals but their enrgy level charges in presenct of magentic field and the orbitals are non-degenerate . (A) spectral line is noticed it an electron jups form one level to to here . the paramgnetic nature of eelment sis due to the presence of unpaired electron . The coarrect orde for menry levels in H-atom is ?A. ` 3s = 3 p = 3d = gt 2s`B. ` 3d gt 3p gt 3s gt 2s`C. ` 3s gt 3p gt 3s gt 2s`D. `3d gt 3p gt 3s =2s`

The electrons in a poly -electronic atom are filled one by one in rode

1.	The electrons in a poly -electronic atom are filled one by one in roder fo increasing energy level . The enrgy fo subsgells and orientation depeds upon the values of three quantum numbers 9 i.e., n. l and m respectively derived from Schrodinger wave equation . The different orbitals fo a subsshells however possess same energy level and are called degenerater orbitals but their enrgy level charges in presenct of magentic field and the orbitals are non-degenerate . (A) spectral line is noticed it an electron jups form one level to to here . the paramgnetic nature of eelment sis due to the presence of unpaired electron . The coarrect orde for menry levels in H-atom is ?A. ` 3s = 3 p = 3d = gt 2s`B. ` 3d gt 3p gt 3s gt 2s`C. ` 3s gt 3p gt 3s gt 2s`D. `3d gt 3p gt 3s =2s`
Answer» Correct Answer - A The different subsdhells of a shwll in H-atom possess same wsengy .

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