When ions are formed only electrons are added or removed. The number of protons

Question

When ions are formed only electrons are added or removed. The number of protons cannot be changed. Doing so would change the identity of the element (as is done in a nuclear reaction). It is always electrons being added or removed from an atom to form an ion. Fill in the blanks to determine the number of protons and electrons in an oxygen ion. (Consult the periodic table to determine the number of protons in a neutral oxygen atom.) The O^2- ion has protons and electrons. Express your answers as integers separated by a comma.

Explanation / Answer

ion O^2-

Oxygen atomic number ( Z) = 8 , charge = -2

so that , no of protons = 8

            no of electrons = 8+2 = 10

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