Multiple Choice
Which element is commonly used for the shiny trim and decorative plating on cars because it is highly lustrous and corrosion-resistant?
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4. Atoms and Elements
Periodic Table: Classifications
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In the periodic table, what do the horizontal rows (periods) indicate?
A
The chemical family (group) and similar reactivity patterns
B
The number of valence electrons for the elements in that row
C
The principal energy level (highest occupied electron shell) of the atoms in that period
D
Whether an element is a metal, nonmetal, or metalloid
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