Which of the following statements is true concerning 
and 
?
A) They have the same number of neutrons.
B) They are isotopes.
C) They have the same relative atomic mass.
D) They have the same mass number.
E) They have different chemical properties.
Correct Answer:
Verified
Q23: In which group of the following groups
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A) curium
B)
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Q27: What halogen is in the third period?
A)
Q29: A sample of an element consists of
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Q31: What element is in the fourth period
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Q33: Which of the following statements is/are CORRECT?
1)The
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