Question: The Ti2+ ion is iso-electronic with the Ca atom. (a) Are there any differences in the electron configurations of Ti2+ and Ca? (b) With reference

The Ti2+ ion is iso-electronic with the Ca atom.
(a) Are there any differences in the electron configurations of Ti2+ and Ca?
(b) With reference to Figure 6.24, comment on the changes in the ordering of the 4s and 3d sub-shells in Ca and Ti2+.
(c) Will Ca and Ti2+ have the same number of unpaired electrons? Explain.

3d 4s Orbitals in a subshell are degenerate (have same energy) -3s Energies of subshells follow order

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