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 fo magentic field and the orbitals are non-degenerate . (A) spectral line is noticed it an electron jups form one level to tohere . the paramgnetic nature of eelment sis due to the presence of unpaired electron . The possible muber of spectral lines when an eelcron can jump `5th` shell to 2nd shell is :A. `4`B. `2`C. `3`D. `6`

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 fo magentic field and the orbitals are non-degenerate . (A) spectral line is noticed it an electron jups form one level to tohere . the paramgnetic nature of eelment sis due to the presence of unpaired electron . The possible muber of spectral lines when an eelcron can jump `5th` shell to 2nd shell is :A. `4`B. `2`C. `3`D. `6`
Answer» Correct Answer - D No. of lines ` = sum Delta n = = sum 5 - 5 2 = sum 3 =6`.

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