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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?