__ 12. An energy level of n=2 can hold __ electrons a . 32 b. 24 c. 8

The correct answer is c. 8.<br /><br />The energy level of n=2 can hold up to 8 electrons. This is based on the formula 2n^2, where n represents the principal quantum number or the energy level. In this case, n=2, so the maximum number of electrons that can be accommodated in the second energy level is 2*(2^2) = 8.