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3 March, 11:36

What gives elements in a family or group similar properties?

a. the same atomic mass

b. the same number of protons in their nuclei

c. the same number of electrons in their outer energy level

d. the same number of total electrons?

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Answers (2)
  1. 3 March, 11:42
    0
    I believe the answer is D.
  2. 3 March, 11:44
    0
    The correct answer is C.
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