If an electrically neutral atom has 4 protons and 4 neutrons and it gains 2 neutrons what is its electrical charge

The mass of a muon is 207 times the electron mass; the average lifetime of muons at rest is 2.21 μs. in a certain experiment, muons moving through a laboratory are measured to have an average lifetime of 7.04 μs. for the moving muons, what are (a) β (b) k, and (c) p? the rest energy of the electron is 0.511 mev.

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?