Which of the Following Electron Configurations Is Not Possible for an Atom

question 5

Multiple Choice

Which of the following electron configurations is not possible for an atom in an excited state?

• A)1 s ²2 s ²2 p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ¹4 p ¹
• B)1 s ²2 s ²2 p ⁶3 s ¹3 p ⁵
• C)1 s ²2 s ²2 p ⁶3 s ²3 p ²3 d ²
• D)1 s ²2 s ²2 p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ²
• E)1 s ²2 s ²2 p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ¹⁴ p ³

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Definitions:

Accounting Break-even Quantity

The number of units that must be sold to cover all costs, both fixed and variable, with no profit or loss.

Variable Costs

Outgoings that are contingent upon the scale of production operations.

Fixed Costs

These are expenses that do not change with the level of production or sales, such as rent, salaries, and insurance premiums.

Required Return

The minimum rate of return an investor expects to achieve by investing in a particular asset.