Multiple Choice
Graphite and diamond are two allotropes of which element?
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5. Molecules and Compounds
Periodic Table: Elemental Forms (Simplified)
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Which gaseous element is commonly used in street lights to produce a bright yellow-orange glow?
A
Chlorine (Cl)
B
Argon (Ar)
C
Neon (Ne)
D
Sodium (Na)
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