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**Problem**: Which of these molecular electron configurations describe an excited state? Check all that apply.a. (σ1s)2(σ1s*)2(σ2s)2(σ2s*)2(σ2p)2(π2p)4b. (σ1s)2(σ1s*)2(π2p)1c. (σ1s)2(σ1s*)2(σ2s)2(σ2s*)2(σ2p)2(σ2p*)1d. (σ1s)2(σ1s*)2(σ2s)1(σ2s*)1

###### FREE Expert Solution

###### FREE Expert Solution

We’re being asked to determine which among the give molecular electron configurations is in excited state.

An **excited state** can be identified by:

• electron that has skipped orbitals

• orbitals that are not completely filled and the next one is already filled

The **general order of orbitals** when they are written is:

**(σ _{1s})(σ_{1s}*)(σ_{2s})(σ_{2s}*)(σ_{2p})(π_{2p})(π_{2p}*)(σ_{2p}*)**

These orbitals can contain a maximum number of electrons:

###### Problem Details

Which of these molecular electron configurations describe an excited state? Check all that apply.

a. (σ_{1s})^{2}(σ_{1s}*)^{2}(σ_{2s})^{2}(σ_{2s}*)^{2}(σ_{2p})^{2}(π_{2p})^{4}

b. (σ_{1s})^{2}(σ_{1s}*)^{2}(π_{2p})^{1}

c. (σ_{1s})^{2}(σ_{1s}*)^{2}(σ_{2s})^{2}(σ_{2s}*)^{2}(σ_{2p})^{2}(σ_{2p}*)^{1}

d. (σ_{1s})^{2}(σ_{1s}*)^{2}(σ_{2s})^{1}(σ_{2s}*)^{1}

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