Question

which of the following electronic transitions is consistent with a decrease in energy ?

5s subshell to 4d
4f subshell to 5p
6s subshell to 5d
5s subshell to 5p
4f subshell to 6p

Answer 1

According to Aufbau principle, electrons are fill in the atomic orbitals of an atom in the increasing order of orbital energy level. The increasing order of energy of subshell are isto 25 2018 358 3p 88 45 F 38 48 49 53884 dpf 5} <p 6s po 41 5 5d to 6 In case-1 5s subshell to 4d According to this order the energy increases. In case-2 4f subshell to 56 According to this order, the energy decreases, In case-3 6s subshell to 5d. According to this order, the energy increase In case -4 55 sub shell to 5p According to this order, the energy increases, 9+ см-5 4; :utsu + Gр Accorling to this order, the energy increases. For ease-2, 144 subshell to 5p the energy decreases