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Modern Periodic Table

State the 3 r...

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State the 3 rules that have to be followed when we write the electronic configuration of an atom using the Quantum Mechanical model.

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Q. While writing the following electronic configuration of Fe atom, which rules have been violated?

I. Aufbau principle II. Hund’s rule III. Pauli’s exclusion principle

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. While writing the following electronics configuration of

F e

atom in the ground state some rules have been violated.

Which of the following has/have been violated?

I. Aufbau's rule
II. Hund's rule
III. Pauli's exclusion priciple

Q. Explain the mechanism of the bromination of ethene without using the quantum mechanical model of an atom.

What is the difference between Quantum Mechanical Model of an atom and Bohr's atomic Model?

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