Which diagram is the correct one?
What other procedure can be used to solve this problem? write down ways to solve.
first, execute plan 1 to solve the problem. Please explain every step.
Think about the way that you can use to make sure that your answer makes sense. write down your assessment.
It can be explained in terms of Pauli's exclusion principle, Aufbau's principle and Hund's rule.
Pauli's exclusion principle : No two electrons can have same four quantum numbers. Hence, only two electrons can stay in an orbital
Aufbau's principle : Electrons will filled up to the orbitals in accordance of their energy.
Energy of an orbital is given by ;:
A. (n+l) rule : higher is the value of (n+l) of an orbital, higher is its energy.
B. n rule : if two orbitals have same (n+l) value then the orbital having higher n value will have higher energy.
For 5s, 4d and 5p orbitals (n+l) values are : (5+0), (4+2) and (5+1) i.e. 5, 6 and 6 respectively. But due to higher n value of 5p orbital the correct order of energy : 5s < 4d < 5p
Hund's rule : for same energy orbital electrons will filled half then full.
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