Answer: The correct statements are they have the same number of electron energy levels and they transition from a metal to noble gas.
Step-by-step explanation:
Elements are arranged in 7 periods and 18 groups in a periodic table.
Elements that are arranged in same group have same number of valence electrons and hence show similar chemical properties.
Elements that are arranged in same period have same number of energy levels. In a periods, first metals come, then non-metals and a period ends with a noble gas always.
Hence, the correct statements are they have the same number of electron energy levels and they transition from a metal to noble gas.