Which of the following pairs has the most similar chemical properties?
A) 1H and 22Na
B) 12C and 28Si
C) 16O and 32S
D) 12C and 14C
E) 1H and 2He
Correct Answer:
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Q21: Carbon has atomic number 6. Carbon most
Q22: What does HOH represent?
A)an atom of water
B)a
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Q24: Polar molecules:
A)have an overall negative electric charge.
B)have
Q25: Which of the following results from a
Q27: Polar covalent bonds form when:
A)electrons are shared
Q28: Which of the following BEST explains why
Q29: Which of the following results from an
Q30: Which of the following often form(s)as a
Q31: If sulfur has an atomic number of
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