Below are energy level diagrams for two different atoms Based on the diagrams, w

Question

Below are energy level diagrams for two different atoms Based on the diagrams, which atom has the larger standard molar entropy at T = 298 K? Select one a. Atom 1 has the larger standard molar entropy because the energy of its ground state is larger than the energy of the ground state of atom b. Atom 2 has the larger standard molar entropy because the energy of its ground state is smaller than the energy of the ground state of atom c. Atom 1 has the larger standard molar entropy because it has fewer energy levels at lower energy values than atom 2 d. Atom 2 has the larger standard molar entropy because it has more energy levels at lower energy values than atom 1

Explanation / Answer

Entropy is a measure of the level of disorder in a system.

In an atom having more number of energy levels at lower energy values, the accessibility of the different energy levels increases and there are more options for electrons to go in different energy levels thus making the entropy level of the atom higher than the one having fewer energy levels at low energy values.

Thus atom 2 has more entropy and option d) is correct.

Comment in case of any doubt.

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