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.

Electron n l mₗ mₛ

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:

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Explanation:

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From the equation, we can see that 2 moles of Na react with 2 moles of H₂O to give 2 moles of NaOH and 1 mol of H₂ (hydrogen gas). So the stoichiometric mole ratio between Na and H₂ is: 2 mol Na/1 mol H₂. Thus, we multiply the mole ratio by the moles of H₂ to be produced to obtain the moles of Na required:

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Explanation:

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