When the cations Na⁺,K⁺,Rb⁺,Cs⁺ are combined with chloride ion in the gas phase to form ion pairs,which pair formation releases the greatest amount of energy? A)KCl B)All release the same amount of energy. C)RbCl D)NaCl E)CsCl

Question

Quizplus · Accepted Answer

The energy released during the formation of an ion pair is related to the lattice energy, which is inversely proportional to the size of the ions. Na⁺ is the smallest cation among the given options, leading to the highest lattice energy and thus the greatest energy release when forming NaCl.

When the Cations Na+,K+,Rb+,Cs+ Are Combined with Chloride Ion in the Gas

When the Cations Na⁺,K⁺,Rb⁺,Cs⁺ Are Combined with Chloride Ion in the Gas