An ion has a net charge of 3+. if this ion has 8 protons, how many electrons does it have? a. 3 b. 5 c. 7 d. 8 e. 11

B. 5

Explanation: A neutral atom has equal number of electrons and protons.

Whenever a neutral atom loses electron it acquires a positive charge. Thus in order to acquire 3+ charge, it must lose three electrons. Thus the number of protons exceeds the number of electrons.

Thus the number of electrons left will be (8-3) = 5 electrons.

If an atom gains electrons, it acquires a negative charge and the number of electrons exceeds the number of protons.

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