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Vsevolod [243]
3 years ago
10

What does the Aufbau principle state?

Chemistry
2 answers:
Vikentia [17]3 years ago
8 0
Hello there!

The correct answer is B. Electrons will be added to an atom starting from the lowest possible level or sublevel.

Hope This Helps You!
Good Luck :) 
Sidana [21]3 years ago
3 0

<u>Answer:</u> The correct answer is Option B.

<u>Explanation:</u>

Aufbau principle states that the electron will occupy the lowest energy level first before occupying the higher energy levels.

In filling of electrons, '1s' orbital will be filled first than '2s' orbital because the former has low energy level than the later.

For Example: Filling of electrons in chromium atom.

Chromium is the 24th element of the periodic table and its electronic configuration must be written as: 1s^22s^22p^63s^23p^63d^44s^2

But the actual configuration for this is 1s^22s^22p^63s^23p^63d^54s^1

This configuration is an exception to Aufbau's principle as half filled sub-levels is more stable than other configurations.

Hence, the correct answer is Option B.

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What is the molar mass of magnesium tartrate
Leya [2.2K]

Answer:

172.385 g/mol

Explanation:

Magnesium Tartrate is C4H4MgO6

C - 12.01 g/mol

H - 1.01 g/mol

Mg - 24.305 g/mol

O - 16.00 g/mol

12.01(4) + 1.01(4) + 24.305 + 16(6) = 172.385 g/mol

3 0
3 years ago
Read 2 more answers
The terms Q and K refer to reaction components at non-equilibrium and equilibrium conditions, respectively. For a forward reacti
daser333 [38]

Answer:

The value of Q must be less than that of K.

Explanation:

The difference of K and Q can be understood with the help of an example as follows

         A ⇄ B

In this reaction A is converted into B but after some A is converted , forward reaction stops At this point , let equilibrium concentration of B be [B] and let equilibrium concentration of A be [A]

In this case ratio of  [B] and  [A]  that is

K =  [B] / [A] which is called equilibrium constant.

But if we measure the concentration of A and B ,before equilibrium is reached , then the ratio of the concentration of A and B will be called Q. As reaction continues concentration of A increases and concentration of B decreases. Hence Q tends to be equal to K.

Q = [B] / [A] . It is clear that Q < K before equilibrium.

If Q < K , reaction will proceed towards equilibrium or forward reaction will

proceed .

8 0
2 years ago
Why must all deadlier pesticides be developed?
alex41 [277]
Due to the other pesticides have outgrown their strength on today’s insects. All must be accompanied by mass paperwork for safety.
8 0
3 years ago
What compound do cells break down for energy in the process of cellular respiration?
arsen [322]

Answer:

Glucose

Explanation:

Glucose is broken down into water and carbon dioxide.

hope this helps! :)

6 0
3 years ago
NEED HELP ASAP 20 POINTS WILL GIVE BRAINLIEST what happens to the density as volume changes
finlep [7]
If the volume increases, the density decreases. If the volume decreases, the density increases.
Hope this helps!
4 0
3 years ago
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