Question

describe the bohr bury rules for filling electrons in atom


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Answer 1

Answer:

The distribution of electrons in different orbits or shells is governed by a scheme known as Bohr bury scheme. The arrangement of electrons in various energy levels of an atom is known as the electronic configuration of the atom. ... The first or the innermost energy shell (K or n = 1) can take only two electrons

Answer 2

Bohr–Bury rules of electronic configuration: Bohr and Bury simultaneously proposed the following rules for the distribution of electrons in different shells.
Rule 1: The maximum number of electrons that can be accommodated in a shell is equal to 2n2 where ‘n’ is the quantum number of the shell (i.e., the serial number of the shell from the nucleus).
Rule 2: Electrons may go into a new outer shell although the inner shells are incompletely filled.
Rule 3: The outermost shell cannot have more than 8 electrons and the next inner, i.e., the penultimate, shell cannot have more than 18 electrons.
Rule 4: Even if the capacity of the penultimate shell exceeds 8, it cannot have more than 8 electrons unless there are 2 electrons in the outermost shell. And it cannot have more than 9 electrons unless the anti–penultimate shell (i.e., the shell immediately preceding the penultimate shell) is completely filled. In such cases, the outermost shell can have more than 2 electrons only after there are 18 electrons in the penultimate shell.
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