Nitrogen - is in group 15 and period 2, Radon - is in group 18 and period six, Nickel - is a transition metal that has an atomic number of 28, Potassium - an alkali metal with a rounded mass of 40, Selenium - a non-metal in group 16 and has four electron rings, Terbium - a lanthanoid in period six and group 12, Copper - a transition metal with a symbol of Cu, Krypton - a noble gas , Iodine - a non-metal in group 17 with 74 nuetrons, Silicon - a metalloid with 14 neutrons, Titanium - a transition metal in group 4 with 26 neutrons, Mercury - an element in group 12 that is a liquid, Xenon - an element in period 5 that is a gas, Tin - an element that has a rounded mass of 119, Lithium - an element that is in group one and has 4 electrons, Bismuth - a post-transition metal in group 15, Aluminum - a post-transition metal in period three, Arsenic - an element that has a rounded mass of 80, Barium - an alkaline earth metal in period six, Astatine - a metalloid in period six and group 17,

Atomic Structure Crosword Puzzle

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