Question

how many Shells are in atom ?​

Answer 1

Answer:

There are 4 shelves in an atom. K,L,M,N

Answer 2

Answer:

A carbon atom has six electrons. It has two in the first shell and four in the second shell. A calcium atom has 20 electrons. Two are in the first shell, eight in the second shell, eight in the third shell, and two in the fourth shell.

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Electron shells.

Energy shell Maximum number of electrons

Second 8

Third 8