which of the following statements is correct regarding the relative size of the

Question

which of the following statements is correct regarding the relative size of the oxygen atom and oxyfen ion
a) the oxygen atom and ion are identical
b) the oxygen atom is larger than the ion because, when the ion is formed, the valence she'll is lost.
c) the oxygen atom is smaller than the ion because of the nuclear charge can hold a smaller number of electrons more tightly, and therefore, closer, than a larger number of electrons.
d) the oxygen atom is smaller because the oxygen atom weighs less than the ion
e) the oxygen atom is smaller because the principal quantum number of the valence she'll of the oxygen ion

Explanation / Answer

option ( c) is correct. Since in case of O-2, the two extra electron outweighs the effective nuclear charge than in O atom,due to which nucleus can't exert attractive forces on thevextra elwctron.Hence size of O- 2 ion is larger than O atom.

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