### Video Transcript

In total, how many electrons are
needed for both the K and L energy levels to be full?

Energy levels are defined as
distances from the nucleus that describe the location of electrons. The first four energy levels are
called K, L, M, and N. Each energy level holds a different
maximum number of electrons. The maximum number of electrons for
energy level K is two, L is eight, M is 18, and N is 32.

The question asks how many
electrons are needed for both the K and L energy levels to be full. As two electrons are needed for K
to be full and eight electrons are needed for L to be full, then two plus eight
electrons are needed for K and L to be full. Two electrons plus eight electrons
equals 10 electrons. Thus, the answer to the question
“how many electrons are needed for both the K and L energy levels to be full?” is 10
electrons.