What idea states that lower energy level orbitals will be filled with electrons before higher energy level orbitals?

Pauli's exclusion principle

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Octet rule

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Aufbau principle

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Hund's rule

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Solution

The correct option is D Aufbau principle
Aufbau's rule/principle states that the sub shell and orbitals of lower energy must be filled first before higher energy levels. The energy is proportional to $(n + l)$ value. Thus answer for question is option C.

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Similar questions

Q. Which idea states that when multiple orbitals of the same energy level are filled with electrons that no one orbital will hold two electrons before all the orbitals are holding least one electron?

Q. If a principle energy level of an atom contains

18

electrons in the ground state, they will be arranged in orbitals according to the pattern.

If carbon atom has electronic configuration 1 $s^{6}$ , it would have energy lower than that of the normal ground state configuration 1 $s^{2}$ 2 $s^{2}$ 2 $p^{2}$ . Yet 1 $s^{6}$ is not observed because it violates

Q. If the nitrogen atom had an electronic configuration of

1 s^{7}

it would have lower energy than that of the normal ground state configuration

1 s^{2}, 2 s^{2}, 2 p^{3}

because the electrons would be closer to the nucleus.

1 s^{7}

is not observed because it violates:

Q. (a) As long as an electron revolves in a particular orbit, the electron does not lose its energy. Therefore, these orbits are called stationary orbits and the electrons are said to be in stationary energy states.
(b) Each orbit or shell is associated with a definite amount of energy. Hence these are also called energy levels.
(c) An electron jumps from a lower energy level to a higher energy level, by absorbing energy. It jumps from a higher energy level to a lower energy level, by emitting energy in the form of electromagnetic radiation.
(d) Electrons move around the nucleus in specified circular paths called orbits or shells or energy levels and are designated as K, L, M, N shells respectively.

Arrange the above postulates of Bohr's theory in a correct sequence:

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What idea states that lower energy level orbitals will be filled with electrons before higher energy level orbitals?

The correct option is D Aufbau principleAufbau's rule/principle states that the sub shell and orbitals of lower energy must be filled first before higher energy levels. The energy is proportional to (n+l) value. Thus answer for question is option C.

The correct option is D Aufbau principle
Aufbau's rule/principle states that the sub shell and orbitals of lower energy must be filled first before higher energy levels. The energy is proportional to $(n + l)$ value. Thus answer for question is option C.