seventh period

Elements of the seventh period, or Q energy level, include francium, radium, actinium, thorium, protactinium, uranium, neptunium, plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, meitnerium, darmstadtium, unununium, ununbium, ununtrium, ununquadium, ununpentium, and the undiscovered elements 116 to 118.