can you write the electronic configuration for Si?
it's an essential skill if you're doing chemistry and it will come in handy. watch this video https://www.youtube.com/watch?v=2AFPfg0Como
still have no idea
1s2 2s2 2p6 3s2 2p2
is it 4
awesome. nope, the last energy level would be 3 the number preceeding the letter (orbital) is the energy level, the higher the number, the higher the energy an electron is
oh wait, no the configuration you wrote is incomplete. \(\sf \huge 1s^2 2s^22p^63s^23p^2\) so yeah, 4 electrons
so the answer is 4