LAS 4

1869 Dimitri Meandeleev and Lothar Meyer

arranged the periodic table by increasing atomic weigh

1913 Henry Moseley

arranged the periodic table by nuclear charge (atomic numbers)

Ernest Rutherford and Niels Bohr

arranged the periodic table by repeated similarities of behavior with structural similarities

Alkali metals

Group 1 is also called

Alkali earth metals

Group 2 is also called

Icosagens

Group 3 is also called

Crystallogens

Group 4 is also called

Pnictogens

Group 5 is also called

Chalcogens

Group 6 is also called

Halogens

Group 7 is also called

Noble gases

Group 8 is also called

melting

solid to liquid

freezing

liquid to solid

vaporization

liquid to gas

condensation

gas to liquid

ionization

gas to plasma

deionization

plasma to gas

Metalloids

Antimony (Sb), Germanium (Ge), Silicon (Si), Arsenic (As), Tellurium (Te), Polonium (Po), Boron (B), Astatine (At) are

Atomic Radius

measure of the size of the atom

lonization Potential

amount of energy needed by a gaseous atom inorder to remove an electron from its outermost orbital.

Electron Affinity

amount of energy released when a neutral atom gains an electron from outside.

Electronegativity

ability of an atom to attract electrons from outside.

coinage metals

copper, silver, and gold are?

left to right and down to up

Which direction does electronegativity increase in?

right to left and up to down

Which direction does atomic radius increase in?

left to right and down to up

Which direction does ionization energy and electro affinity increase in?