Electrons fill an atom's shells in order of increasing energy. The closer a shell is to the , the lower its energy, so the first shell that is filled is the closest to the nucleus.

Which electron shell has the lowest energy? The one furthest from the nucleus.1The one closest to the nucleus.2All electron shells have the same energy.

Electrons closest to the nucleus have the ____________ energy

The outermost, highest energy shell of an atom is called… and electrons in an outermost shell of an atom are called …Question 17Select one:a.Valence shell; Valence electronsb.Vale shell; vale electronsc.Inner shell; inner electronsd.Valence electron; valence shells

Which electrons are the valence electrons of the atom?A.The electrons closest to the nucleusB.The electrons farthest away from the nucleusC.The electrons that have lost their chargeD.The electrons that have entered the nucleus

Which of the electron shells in the atom shown below will fill up with electrons first? 111222333