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diamong [38]
3 years ago
13

How many sets of quantum numbers must be used to describe the electrons in a neutral beryllium atom?

Chemistry
1 answer:
Georgia [21]3 years ago
4 0

Answer:

You must use four sets of quantum numbers.

Step-by-step explanation:

A neutral Be atom has four electrons, and each electron has its own unique set of the four quantum numbers n, l, mₗ and mₛ.

Here is the set of quantum numbers for each electron.

<u>Electron</u>   <u>n</u>     <u> l </u>    <u>m</u>ₗ   <u> mₛ </u>

     1           1     0     0    +½

    2           1     0     0    -½

    3           2    0     0    +½

    4           2    0     0    -½

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Answer:

The addition of sulfate ions shifts equilibrium to the left.

Explanation:

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In this case, according to the following ionization of strontium sulfate:

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It is evidenced that when sodium sulfate is added, sulfate, SO_4^{2+} is actually added in to the solution, which causes the equilibrium to shift leftwards according to the Le Ch athelier's principle. Thus, the answer in this case would be:

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