The transition element is the element in which the orbitals of d or F are occupied with electrons but not completely filled either in its atomic state or in one of its oxidation states,...
Elements are arranged in ascending order of their atomic number and according to their electronic configurations, the sequence of elements agrees with the Auf-bau principle, The long-form periodic table is classified into 4 blocks which...
Quantum numbers The mathematical solution of Schrodinger’s equation introduced four numbers that were called quantum numbers , to determine the energy of an electron in multi-electron atoms , we should know the four quantum...
