Is a neutral atom has a mass of 12 amu an atomic number of 5 determine the number of protons neutrons and electrons in the atom? ?

It will be 1000009999999 becuase its all the way infinity

It will have 12 atomic mass units (protons and neutrons). 12-5 protons means there are 7 neutrons. The electrons will match the number of protons minus any charge. No charge is mentions so I assume 5 electrons

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.