Question

In which of the excitation state of chlorine clf3 is formed?

Answer 1

In first excitation state

Answer 2

Chlorine forms $ClF_3$ in its first excitation state.

Explanation:

• The electronic configuration of chlorine in ground state as well as first excitation states are as follows:

Ground state: $3s^23p^5$$3d^0$

First state: $3s^23p^43d^1$

• It is evident that in the ground state the d-orbital of chlorine is vacant whereas, in the first excitation state, it contains 1 electron.
• It is because, due to excitation, the electrons from the p-orbitals gets shifted and moves to d-orbital due to which three unpaired electrons (2 in p orbital and 1 in d orbital) are available.
• This movement facilitates the bonding and formation of $ClF_3$ at the first excitation state.

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