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borishaifa [10]
3 years ago
14

According to the aufbau principle,_____.

Chemistry
2 answers:
Softa [21]3 years ago
5 0

Answer:

Hi there!

The correct answer to this question is: electrons enter orbitals of lowest energy first.

natulia [17]3 years ago
3 0

Answer:

C

Explanation:

Aufbau principle states that the electrons which are present in ground state of fill the atomic orbitals in such a way that the lowest energy levels which are available are filled first before electrons occupying the higher levels.

<u>Hence, From the given options, C is correct which is electron enter orbitals of lower energy first.</u>

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<h3></h3><h3>What is Spontaneous reaction ?</h3>

Reactions are favorable when they result in a decrease in enthalpy and an increase in entropy of the system.

When both of these conditions are met, the reaction occurs naturally.

Spontaneous reaction is a reaction that favors the formation of products at the conditions under which the reaction is occurring.

According to Gibb's equation:

ΔG = ΔH - TΔS

ΔG = Gibbs free energy

ΔH = enthalpy change  = +62.4 kJ/mol

ΔS = entropy change  = +0.145 kJ/molK

T = temperature in Kelvin

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  • ΔG = -ve, reaction is spontaneous
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ΔH - TΔS = 0 for reaction to be spontaneous

T = ΔH / ΔS

Here,

T = 500K

Thus the Reaction is spontaneous when temperature is 500 K.

Learn more about Gibbs free energy here ;

https://brainly.in/question/13372282

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