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Chapter 4: Problem 11

Which group of elements has very high ionization energies and very low electron affinities?

Short Answer

Expert verified
The group with very high ionization energy and very low electron affinity is the Noble gases, Group 18.

Step by step solution

01

Understanding Ionization Energy and Electron Affinity

The ionization energy is the energy required to remove an electron from an atom or ion. In the periodic table, it generally increases from bottom to top and from left to right. Conversely, the electron affinity is the energy change when an electron is added to the atom, and it also has a trend that generally increases from bottom to top and from left to right in the periodic table.
02

Apply the Trends

Applying these trends in electron affinity and ionization energy, a group that has very high ionization energy and very low electron affinity would be found at the top right of the periodic table.
03

Identification of the Group

From the periodic table, it is apparent that the elements in Group 18 often referred to as the Noble gases, have this characteristic. This is due to their filled electron shells which make them have a low affinity for extra electrons and very high ionization energy.

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