PLEASE HELP ME WITH THIS QUESTION ASAP! Compare the energy of an electron in the first shell of a cadmium atom to the energy of an electron in the third shell of the same atom.

did anyone actually do this? like if anyone has submitted this i rly need .

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