1) sceince a) A proton is the positive energy in an atom b) a proton is the negetive energy c) an electron is the negative charge of the atom d) It goes around the atom and gives it the negative charge of the atom e) a neutron is a neutrally charge particle of an atom f) A nucleus is the center of an atom it is made up of protons and neutrons 2) sceince a) science. is goodd b) nfsjs c) db nd d) ndjs e) ms f) sc sm

yeet

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？