A particular neutral uranium atom has 92 protons, 143 neutrons, and an atomic mass of 235. How many electrons does the atom have?
A. 92
B. 143
C. 235
D. 337
1 answer
Atoms are neutral. Each electron has a -1 negative charge and each proton has a +1 positive charge. It has 92 protons so it must have ????? electrons.
4 answers