Subject Keywords: cesium, chlorine, chromium, cobalt, columbium, copernicium, copper, curium, darmstadtium, database, deuterium, doubly-charged, dubnium, dysprosium, einsteinium, element, energy levels, erbium, europium, fermium, flerovium, fluorine, francium, gadolinium, gallium, germanium, gold, ground states, hafnium, hassium, helium, holmium, hydrogen, indium, iodine, ionization potentials, ionization-energies, ionization-limits, ionized-atoms, iridium, iron, mendelevium, mercury, molybdenum, multiply-charged, neodymium, neon, neptunium, neutral, nickel, niobium, nitrogen, nobelium, osmium, oxygen, palladium, phosphorus, platinum, plutonium, polonium, potassium, praseodymium, promethium, protactinium, quadruply-charged, radium, rhenium, rhodium, roentgenium, rubidium, ruthenium, rutherfordium, samarium, scandium, seaborgium, selenium, silicium, silicon, silver, singly-charged, sodium, spectra, spectral lines, spectroscopy, spectrum, strontium, sulfur, sulphur, tantalum, technetium, tellurium, terbium, thallium, thorium, thulium, tin, titanium, transition probabilities, triply-charged, tritium, tungsten, ununbium, ununhexium, ununoctium, ununpentium, ununquadium, ununseptium, ununtrium, unununium, uranium, vanadium, wavelengths, xenon, ytterbium, yttrium, zinc, zirconium, krypton, kurchatovium, lawrencium, lanthanum, lead, lithium, livermorium, lutetium, magnesium, manganese, meitnerium, Atomic, Atomic Spectroscopy, Radon, actinium, aluminium, aluminum, americium, antimony, argon, arsenic, astatine, atom, atomic physics, atomic property, atomic-ions, barium, berkelium, beryllium, bismuth, bohrium, boron, bromine, cadmium, calcium, californium, carbon, cerium