In A Reaction, Chlorine Accepts An Electron To Form Cl-. Which Statement Is True About The Atomic Size Of The Chlorine Ion? A. The Atomic Size Of The

In a reaction, chlorine accepts an electron to form Cl-. Which statement is true about the atomic size of the chlorine ion? A. The atomic size of the chlorine ion is larger than the size of the chlorine atom. B. The atomic size of the chlorine ion is smaller than the size of the chlorine atom. C. The atomic size of the chlorine ion reduces to zero. D. The atomic size of the chlorine ion is equal to the size of the chlorine atom.

 

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Answer:

A. The atomic size of the chlorine ion is larger than the size of the chlorine atom.

Difference of Chlorine ion and chlorine atom:

                              Chlorine Ion                         Chlorine Atom

# of protons                17                                              17

# of electrons             18                                               17

# of shells                    3                                                3

       

The size of an atom can be measured by its atomic radius. Atomic radius is the distance between the center of the nucleus of an atom to the valence shell or the last shell. Ideally, the greater the number of the shells, the greater the atomic radius. If both have the same number of shells, then the number of protons and electrons will be the basis in determining the atomic  radius. Protons located in the nucleus and electrons stays in the shells. Protons is positive charged and will attract the electrons carrying negative charge which affects the size of atomic radius making the valence shell to come closed to the nucleus occupying less atomic radius. More protons will results to lesser atomic radius. If they have the same number of protons then the lesser number of electrons have smaller atomic radius since it has more attraction compared to more number of electrons.

Chlorine atom have smaller atomic size compared to Chlorine ion.

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