Polina C.

asked • 03/26/15

Using Clues to Identify Elements

Elements 2, 5, 18, 29, and 33 are colorless, odorless, unreactive gases. Of these gases, element 29 has the largest atomic mass.
Elements 13, 19, 23, and 34 have six valence electrons, and element 13 is a metalloid.
Elements 9, 14, 16, and 21 are highly reactive metals in the same group. Of these metals, element 16 is the least reactive.
Elements 1, 8, 11, 13, 14, 17, 24, and 29 are in the same period.
Elements 11, 26, 27, and 28 have three valence electrons.
Elements 1, 4, 6, and 30 are found in the same group. Element 6 is in chlorophyll molecules.
Elements 10, 22, 24, and 32 are in the same group. Element 22 is a liquid at room temperature.
Elements 2, 10, 15, and 34 are nonmetals in the same period.
Elements 7, 15, 17, and 25 are in the same group. Of these, only element 7 is a gas at room temperature.
Elements 12, 20, and 26 are metalloids. Elements 20 and 12 are in the same group.
Element 30 is important to maintain strong bones and teeth.
An atom of element 21 has one more proton than an atom of element 2.
Elements 3 is a nonmetal with one valence electron.
Element 27 is the most abundant metal in Earth’s crust.
Element 31 is a solid at room temperature. Most of the compounds in your body contain this element.
Element 18 has two electrons.
Element 33 has a smaller atomic mass than element 5.
Element 32 is the most reactive nonmetal.
Element 20 and element 19 are combined in a compound found in glass.
Glass that contains element 26 does not shatter easily.
Element 19 is the most abundant element in Earth’s crust

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Pascal M. answered • 03/30/15

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