Question

describe division of shells into sub-shell​

Answer 1

Answer:

The electrons in an atom are arranged in shells that surround the nucleus, with each successive shell being farther from the nucleus. Electron shells consist of one or more subshells, and subshells consist of one or more atomic orbitals

Answer 2

Explanation:

Electrons orbit the nucleus of an atom at different ranges, called shells.Each shell has a different energy level, increasing the further it is from the nucleus.

Each energy level is given a number called the principal quantum number, n. The closest shell has a value of n=1. The next shell has a value of n=2, etc.

The maximum number of electrons possible in the first four energy levels are: n= Shell Maximum Number of Electrons

1 1st Shell 2

1st Shell 22 2nd Shell 8

2nd Shell 83 3rd Shell 18

3rd Shell 184 4th Shell 32

4th Shell 32 Using the above you can work out the maximum number of electrons that can occupy a shell is 2n2.Electrons are placed into available shells, starting with the lowest energy level. Each shell must be full before the next starts to fill. This model breaks down at the n=3 shell because each shell has subshells.

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