An atomic mass unit is a unit of measurement that is used to measure the mass of atoms. The atomic mass unit (abbreviated: amu or u) is roughly equal to the mass of 1 proton<span> or 1 neutron. The unified atomic mass unit and the dalton are different names for the same thing. The dalton name is used more over time.</span>
Answer:
youre right i think its 1 and 5
because it cant be 2 or 3
Explanation:
I hope this answers your question(s). Have a good weekend!
Electrons are orbiting the nucleus in the fxed way paths located in solid sphere
1=c 2=a 3=b
i hope these answer your questions