Question

How many unpaired electrons are there in Ti2+ ?

Answer 1

Answer:2

Explanation:

Ground state electronic configuration of Ti :(Ar)4s2 3d2.

Now electrons are removed from outermost shell. So in Ti outermost shell is n=4. So electron will come out from 4s2.

Hence,Ti+2:(Ar)4s0 3d2. And d subshell contain 5 orbitals .so there will 2 unpaired e-.

Answer 2

Given: The given ion is $Ti^{+2}$.

To find: We have to find the number of unpaired electrons.

Solution:

The given ion is $Ti^{+2}$.

Ti is a transition element. It has the atomic number 22. When two electrons are removed from Ti the atomic number becomes 20.

Thus the electronic configuration of the ion is as follows-

${1s}^{2} {2s}^{2} {2p}^{6} {3s}^{2} {3p}^{6} {3d}^{2}$

Thus, the 3d orbital contains two unpaired electrons.

Thus the number of unpaired electrons in the given ion is 2.