Question

While atoms of nonmetals don't like to lose electrons, they can be induced to do so, and the size of the cations as well as the anions of these atoms can be measured. Which is the largest species in the following group? P5+ P3- P Explain your answer

Answer 1

P atomic number = 15

P + 3e^- ----------> P^3-

15e^-      ----------    18e^-

15P   --------------    15P

P^3- is largest species because of number of protons are less than the number of electrons.The nuclear attraction decreases over valency electrons.

P -5e^- ------------> P^5+

15e^- -------------- 10e^-

15P --------------- 15P

P^5+ is smaller species because of number of protons are greater than the number of electrons.The nuclear attraction increases over valency electrons.

The anion size always greater than neutral atom . The cation size always less neutral atom

P^3- > P>P^5+