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Write the distribution of electrons in carbon and sodium atoms?

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The total number of electrons in a carbon atom is 6. The distribution of electrons in carbon atom is given by: 

First orbit              or       K-shell        = 2 electrons 

Second orbit        or        L-shell        = 4 electrons 

Or,

we can write the distribution of electrons in a carbon atom as 2, 4. 

The total number of electrons in a sodium atom is 11. The distribution of electrons in sodium atom is given by: 

First orbit             or       K-shell       = 2 electrons 

Second orbit        or      L-shell        = 8 electrons 

Third orbit            or      M-shell       = 1 electron 

Or, 

we can write distribution of electrons in a sodium atom as 2, 8, 1.

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