Question

Give the condensed electron configuration and the number of unpaired electrons for Ti*+. [Ne]3s 3p Opaired electrons

Answer 1

Aufbau principle: The electrons in the orbital of lower energy filled first followed by the higher orbital energy. 18" 26 2p 3p : -40 -5p 30 ...4d 5d 4 X-5 * 6s 6p The increasing order of energy of the orbital is shown below. 1s <2s < 2p 3s 3p < 4s <3d < 4p<5s < 4d <5p< 6s <4f <5d <6p < 7s The electronic configuration of titanium ion (Ti**) can be expressed as follows. Ti(226) = 15²2s²2p%3s²3pº3d²4s? Ti** (186") = 15²2s²2p9353pº .....(1)

Electronic configuration of argon (Ar) is shown below. The atomic number of argon = 18 [Ar] =1s 2s 2p 3s 3p Substitute [Ar] as the value of 1s22s22pº3s23pº in the equation (1). Ti** (180) = [Ar] Unpaired electrons for Ti4is = 0 Therefore, the electronic configuration of titanium ion (Ti") is [Ar] and the number of unpaired electrons of Ti*is zero.