Chapter 7 Memorize CHM 1100 Review

Ten vocabulary-style flashcards defining the periodic trends, ionic size variations, and common charges outlined in the Chapter 7 review sheet.

Atomic radius trend

Increases DOWN and LEFT on the periodic table

Ionization energy trend

Increases UP and RIGHT on the periodic table

Electron affinity trend

Generally becomes more favorable UP and RIGHT on the periodic table.

Cation size rule

Formed by losing electrons, resulting in a smaller size than the parent atom.

Anion size rule

Formed by gaining electrons, resulting in a larger size than the parent atom.

Isoelectronic series size rule

For species with the same number of electrons, those with more protons are smaller.

Ionic size for the same element

The ion is smaller when it has more + charge.

Transition-metal cation electron removal

Electrons are removed from the highest n first, meaning the 4s orbital comes off before the 3d orbital.

Common main-group cation charges

Atoms in Group $1$ form $+1$ ions and atoms in Group $2$ form $+2$ ions.

Common main-group anion charges

Group $15$ corresponds to $-3$, Group $16$ to $-2$, and Group $17$ to $-1$.