Question

Which of the following statements is/are CORRECT?
1/ Chemical reactions result in the gain, loss, or rearrangement of valence electrons.
2/ For main group elements, the number of valence electrons equals eight minus the element's group number.
3/ Core electrons are not involved in bonding or in chemical reactions.
A.1 only
B.2 only
C.3 only
D.1 and 3
E.1, 2, and 3

Answer

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