General Chemistry (4th Edition)

Published by University Science Books
ISBN 10: 1891389602
ISBN 13: 978-1-89138-960-3

Chapter 6 Ionic Bonds and Compounds - Problems: 60

Answer

Cations consist of fewer electrons as compared to neutral atom, therefore, the remaining electrons are held more tightly with the nucleus, which decreases the size of the cations. On the other hand, anions are formed when neutral atoms acquire electrons. So the positive charge is less than the negative charges and electrons are not held as tightly as they were in neutral state. Moreover, repulsion is greater among the electrons, which also contributes to the size.

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