Which of these is true of the first ionization energy within a group? question 13 options: there is no pattern of ionization energy within a group. the first ionization energy does not vary within a group. the first ionization energy increases from top to bottom within a group. the first ionization energy decreases from top to bottom within a group.

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus. b) the number of neutrons it contains in its nucleus. c) the number of protons it has in a cloud around the nucleus. d) the number of neutrons it has in a cloud around the nucleus. e) the number of electrons it exchanges with its neighbors.