Protons: inside of the nucleus, positive charge, determine what element it is, atomic number is based on these, these and the neutrons determine the atomic mass number, Neutrons: also inside of the nucleus, no charge, these and the protons determine the atomic mass number, Electrons: outside of the nucleus, negative charge,

만든이

순위표

비주얼 스타일

옵션

템플릿 전환하기

자동 저장된 게임을 복구할까요?