The ____ is the small, dense region consisting of ____ and neutrons at the center of an atom. It was discovered in 1911 by Ernest ____. Although it takes up very little space, it contains almost all of the atom's ____. The strong nuclear force binds the particles together, overcoming the electric ____ between the protons.

순위표

비주얼 스타일

옵션

템플릿 전환하기

자동 저장된 게임을 복구할까요?