Give the number of electrons in the species and


A positive charged ion denotes the loss of an electron & A negative charged ion represents the gain of an electron by a species.

For H+2:


Number of electrons present in Hydrogen molecule = 2


So, Number of electrons present in H+2 = 2 – 1


= 1


For H2:


Number of electrons present in Hydrogen molecule = 2


For O+2:


Number of electrons present in Oxygen molecule = 8 + 8


= 16


So, Number of electrons present in O+2 = 16 - 1


= 15


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