Write the rules proposed by Bohr – Bury for electron distribution.

1.	Write the rules proposed by Bohr – Bury for electron distribution.
Answer» Bohr-Bury proposed the following rules for electron distribution. Rule – 1 : The maximum number of electrons that can be accommodated in each shell is given by a formula 2n2. Where n is the shell number, which takes the values 1, 2, 3,…. Ex : For K shell, n = 1 ∴ Maximum number of electrons in K shell = 2(1)2 = 2 × 1=2 Rule – 2 : Each energy level or electron shell is further divided into subshell. The maximum number of electrons that can be accommodated in each subshell is 8. Rule – 3: Electron cannot be filled in a given shell unless the inner shells are completely filled.

Answer»

Bohr-Bury proposed the following rules for electron distribution.

Rule – 1 :

The maximum number of electrons that can be accommodated in each shell is given by a formula 2n2. Where n is the shell number, which takes the values 1, 2, 3,….

Ex : For K shell, n = 1

∴ Maximum number of electrons in K shell = 2(1)2 = 2 × 1=2

Rule – 2 :

Each energy level or electron shell is further divided into subshell. The maximum number of electrons that can be accommodated in each subshell is 8.

Rule – 3:

Electron cannot be filled in a given shell unless the inner shells are completely filled.

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