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Which two elements will be the most alike and why? a. Helium (He) and Hydrogen (H) b. Oxygen (O) and Neon (Ne) c. Lithium (Li) and Sodium (Na)

Which two elements will be the most alike and why? a. Helium (He) and Hydrogen (H) b. Oxygen (O) and Neon (Ne) c. Lithium (Li) and Sodium (Na)
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Which two elements will be the most alike and why?

a. Helium (He) and Hydrogen (H)
b. Oxygen (O) and Neon (Ne)
c. Lithium (Li) and Sodium (Na)

User Tomsp
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1 Answer

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C.) Lithium (Li) and Sodium (Na)

Because they are in the same group (vertical rows) which means they have the same number of valence electrons and will react similarly.
User RandyLahey
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