5.Infer: Which group has high ionization energies but very weak electron affinities? Why do you think this is so?

The group having high ionization energies, but weak electron affinities is group 18 of noble gases.

Ionization energy can be defined as the amount of energy required for the removal of electrons. In noble gases, the elements have stable electronic configuration, they require a high amount of energy for removing an electron. Thus they have high ionization energy.

Electron affinity has been the energy required for the addition of an electron. The electron affinity for the addition of electrons has been zero as they are stable elements, and do not require the addition of an electron.

For more information about ionization energy, refer to the link:

link

The group that has high ionization energies but very weak electron affinities is the group 18, (VIIIa) which are the noble gases, the group of elements including; He, Ne, Ar, Kr, Xe, Rn, and Og in the column, at the far right corner of the periodic table

The electronic configuration of the noble gases show that they have the complete octet or 8 electrons (or duplet, 2 electrons, for helium) in their valence shell, therefore, they are relatively stable and seldom take part in chemical reaction which requires the transfer of electrons

Therefore, the noble gases have high ionization energies (require high amount of energies to remove an electron) and low electron affinity (they require an input of energy before an electron can attached to them)

Explanation:

indium, and thallium have three electrons i think

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