![]() ![]() ^ IUPAC Provisional Recommendations for the Nomenclature of Inorganic Chemistry (2004) (online draft of an updated version of the " Red Book" IR 3-6.Sometimes the group number is used, as in group 14 element, and sometimes the name of the first element in the group is used, as in carbon group or carbon family. Heavy atom - term used in computational chemistry to refer to any element other than hydrogen and helium.Īny periodic table group can also be used in this sense.Superactinide - Hypothetical series of elements 121 to 153, which includes a predicted "g block" of the periodic table.Minor actinide - Actinides found in nuclear fuel, other that U and Pu: Np, Am, Cm.Beryllium, Magnesium, Calcium, Strontium, Barium, Radium Post. Transplutonium element - Elements with atomic number greater than 94. Lithium, Sodium, Potassium, Rubidium, Caesium, Francium Alkaline earth metals.Transactinide element - Elements after the actinides (atomic number greater than 103).Transuranium element - Elements with atomic number greater than 92.Earth metal - Old historic term, usually referred to the metals of groups 3 and 13, although sometimes others such as beryllium and chromium are included as well.Poor metal - Sometimes used to refer to the metals of the p block: Al, Ga, In, Tl, Sn, Pb, Bi. ![]()
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