Do you expect the ionization energies of anions of group 17 element to be lower than,...

Do you expect the ionization energies of anions of group 17 element to be lower than, higher than, or about the same for neutral atoms of the same group?

Expert Solution

The ionization energy of anions would be lower than that for neutral atoms of the group 17.

reason=

Group 17 atoms have 7 valence electrons and they need one more electron to gain the most stable electronic configuration with 8 valence electrons.Actually, with the addition of an extra electron the valence shell gets completely filled up and the anion formed gains stability.

when it comes to extracting electrons from a neutral atom of the same group,the electrons are tightly bound as there are equal number of protons (as the no of electrons outside) to hold the valence electrons tightly.

In case of an anion, there is an extra added electron (for group 17), which is to be pulled out.This extra electron is less tightly held by the protons in the nucleus comparatively.The protons in the nucleus is 1 less than the number of electrons outside.So less pull, lower energy( Ionization energy) needed to extract that extra electron.

queen_honey_blossom answered 5 hours ago

Successive ionization energies of an element is given. How do you determine the group to which it...

Successive ionization energies of an element is given. How do you determine the group to which it belong

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