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#0.6.What is Aufbau Principle? What are (n +1) rules? |
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Answer» The aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. ... The aufbau principle is sometimes called the building-up principle or the aufbau rule TheAufbau principlestates that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. Example: The1sshell is filled before the2ssubshell is occupied. In this way, the electrons of an atom or ion form the most stable electron configuration possible. orbitals are filled in the order of increasing energy, using two general rules to help predict electronic configurations:- 1. Electrons are assigned to orbitals in order of increasing value of (n+ℓ). 2. For subshells with the same value of (n+ℓ), electrons are assigned first to the sub shell with lower n. |
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