A period on the periodic table refers to _____., a vertical column, a horizontal row, a group of elements with similar properties, A group on the periodic table refers to _____., a vertical column, a horizontal row, a group of elements with similar properties, The period number on the periodic table corresponds to the number of _____., protons, valence electrons, energy levels, neutrons, Every element in the same group, except for the transition metals, has the same _____., set of isotopes, number of energy levels, number of protons, number of valence electrons, To be classified as a metal, an element must have the properties of ___., brittle, solidity, poor conductivity., coarseness, ductility, transparency., malleability, luster, good conductivity., A gaseous element would be classified as a ___., metal, nonmetal, metalloid, One sample of an element is dull and is not lustrous. Another different element is a poor conductor of heat and electricity. These elements are most likely classified as ___., metals, nonmetals, metalloids, Which of the following elements is in the lanthanide family?, 63 Europium (Eu), 2 Helium (He), 9 Fluorine (F), 3 Lithium (Li), Which of the following elements is a noble gas?, 63 Europium (Eu), 2 Helium (He), 9 Fluorine (F), 3 Lithium (Li), Which of the following elements is in the halogen family?, 63 Europium (Eu), 2 Helium (He), 9 Fluorine (F), 3 Lithium (Li), Which of the following elements is an alkali metal?, 63 Europium (Eu), 2 Helium (He), 9 Fluorine (F), 3 Lithium (Li), Which of the following elements is in the halogen family?, 11 Sodium (Na), 17 Chlorine (Cl), 79 Gold (Au), 4 Beryllium (Be), Which of the following elements is an alkali metal?, 11 Sodium (Na), 17 Chlorine (Cl), 79 Gold (Au), 4 Beryllium (Be), Which of the following elements is an alkaline earth metal?, 11 Sodium (Na), 17 Chlorine (Cl), 79 Gold (Au), 4 Beryllium (Be), Which of the following elements is a transition metal?, 11 Sodium (Na), 17 Chlorine (Cl), 79 Gold (Au), 4 Beryllium (Be).

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