The electrons in a poly -electronic atom are filled one by one in roder fo increasing energy level .
Channel: Doubtnut
Date: 02/08/2020

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 element which has as many as `s` electrons as (p) electrons by belong to (III) period is ?