hey, Does anyone know the periodic trends. I understand going from left to right:ionization increases, electron affinity increases, atomic radii decreases, and electronegativity increases....I think thats all of them. But I heard electronegativity stops at the halogens and not at the noble gases. I'm guessing thats because they don't want any more electrons. Do all the rest go all the way to the noble gases or do others stop at F as well? I'd hate to get simple questions like this wrong on the DAT.

hey, Does anyone know the periodic trends. I understand going from left to right:ionization increases, electron affinity increases, atomic radii decreases, and electronegativity increases....I think thats all of them. But I heard electronegativity stops at the halogens and not at the noble gases. I'm guessing thats because they don't want any more electrons. Do all the rest go all the way to the noble gases or do others stop at F as well? I'd hate to get simple questions like this wrong on the DAT.

All trends go to the noble gases except electron affinity and electronegativity which highly correlates with one another. Someone correct me if im wrong. But if you think about it, it all makes sense.

ionization energy- the energy needed to remove an electron. ie. greatest in the inert gases because they have a full octet.

electron affinity- the attraction an element has towards electrons. stops at halogens because again, noble gases already have a full octet.

electronegativity- has to do with bonding of atoms. The more electronegative an atom compared to its bonding atom, the more unequal sharing of electrons there are. F is the most electronegative.

Atomic radii runs to the noble gases. In neutral atoms, the nuclear effective charge takes more precedence then the repulsion of electrons themselves.

Starts with
I and E
Increases up and to the right


Starts with something else (atomic radii)
Increase down and to the left

opposites.

easy wayto rem it iguess.

yes, but electronegativity and electron affinity is highest in halogens not in inert gases.

Starts with
I and E
Increases up and to the right


Starts with something else (atomic radii)
Increase down and to the left

opposites.

easy wayto rem it iguess.

<retract post, too harsh>

good explanation tranv117

<retract post, too harsh>

good explanation tranv117

You have issues. I'm glad my attempting to help others bothers you so much.

yes, but electronegativity and electron affinity is highest in halogens not in inert gases.

Oh yeah. I misunderstood his Q. I thought he was just asking about the trend, and though he explained himself why it stops at the halogen group. My bad.:o

ok, so all the trends go toward the noble gases with the exception of electron affinity and electronegativity which stop at the halogens. Thanks