Write Bohr,burry rules of electronic configuration
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Bohr and Bury Scheme - Important Rules. The outermost shell of an atom cannot accommodate more than 8 electrons, even if it has a capacity to accommodate more electrons. This is a very important rule and is also called the Octet rule. The presence of 8 electrons in the outermost shell makes the atom very stable.
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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 2n2where ‘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.
Rule 1: The maximum number of electrons that can be accommodated in a shell is equal to 2n2where ‘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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