According to the bohr model of an atom, what happens when an electron moves from the second energy level to the third energy level and then back to the second energy level?

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer