Question

Why does the second row of the periodic table have 8 elements​

Answer 1

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Step-by-step explanation:

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Answer 2

short asnwer:

here are 8 elements in period 2 because all those elements have electrons in the second shell and no electrons in the third shell.

Step-by-step explanation:

There are certain rules for arranging atoms in shells 1) Maximum number of electrons in a shell is given by the formula 2n^2. 2) The outermost ( valence) shell can accomodate only 8 electrons.