Each shell can hold a maximum of 2n^2 electrons, where n is the shell number. The third shell is n=3, so it can hold a maximum of 2*3^2 = 18 electrons.

The third shell of an atom can have a maximum of _____

Answer is Right!

Answer is Wrong!

The correct answer is C. 18.

Each shell can hold a maximum of 2n^2 electrons, where n is the shell

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Option A is incorrect because it is the number of electrons in the second shell.

Option B is incorrect because it is the number of electrons in the third shell of a lithium atom.

Option D is incorrect because it is the number of electrons in the fourth shell.

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