Chemistry Periodic Table Trends

Atomic Radius across the table

As it goes down the table it increases, as it goes across the table it decreases

Atomic Radius

As the atom gets closer to valence electrons on the table the size decreases as Columbs law states the smaller the distance the greater the force.

Ionization energy

The energy needed to remove an electron from a gas atom, Larger the atomic radius the smaller the ionization energy

Electronegativity definition

The ability of an atom in a molecule to attract shared electrons

Electronegativity action

The larger the atomic radius the weaker the attraction due to more distance between the nucleus of one atom and the valence electrons of another atom- smaller negativity

Electron affinity definiton

energy change when an atom gains an electron to form a negativitly charged ion

Electron Affinity metals

Easier to lose electrons because the nucleus doesnt have a strong attraction to valence electrons

Electron Affinity Nonmetals

Easier to gain electrons because the nucleus has a strong attraction to valence electrons

Electron Affinity more/less neg

Across a period becomes more neg/releases more energy. Down a group because less negative