Trends? [ENDORSED]

[Guadalupe T 1E]

What are the trends we have gone over in class? I know for sure there is atomic size and electronegativity.

[jillian1k]

The periodic/group trends we've covered are atomic radius, ionic radius, ionization energy, electron affinity, and electronegativity. Also, I guess technically electropositivity, but this is just the exact opposite of electronegativity (and if I recall correctly, the only time it was used was for a homework problem or two).

[diangelosoriano]

You should also be sure to be aware of the exceptions to the periodic trend rules. (Ex: noble gases not being included in the general electron affinity general trend)

[SamanthaGrohe1B]

you should remember the trends but also keep in mind how not every element follows these trends perfectly as the organization of the periodic table does not perfectly account for all of the features of these elements.

[breannasung_1K]

we have gone over: atomic #, # of shells, atomic radius, effective nuclear charge, electronegativity, first ionization energy and electron affinity.

[nelquosey]

We went over atomic radius, ionic radius, ionic energy and electron affinity in class.

[Jordanmarshall]

So why is Oxygen more electronegative than Chlorine?

[Mariah Guerrero 1J]

Is there a trend involved in the second ionization energy?

[kendallbottrell]

So why is Oxygen more electronegative than Chlorine?

The simple answer is that going across the periodic table has a less significant impact on electronegativity than going down it does.

[RubyLake1F]

Is there a trend involved in the second ionization energy?

Second ionization energies are always higher than the first ionization energy for that same element (because after removing one electron, the effective nuclear pull on the remaining electrons is stronger). In terms of comparing the second ionization energies of multiple different elements I don't think we would have to do this, but I would assume it generally follows the same trends as first ionization energy.

[Allen Chen 1J]

So far, we've went over atomic radius, ionic radius, ionic energy and electron affinity.