Atoms and the Periodic Table Flashcards
Mendeleev
Organized by atomic mass
Moseley
Organized by atomic number
Elements with the same properties are found in the same______
Families
Atomic radius
Measure of the atoms
Atomic radius trend
Across period : smaller
Down a family: larger
Define ionization energy
Amount of energy required to move an electron
Ionization trends
Across period: higher
Down family: lower
Electro negativity
The tendency of an Atom to attract another
Electronegativity trends
Across period: bigger
Down family: smaller
Valance electrons
Electrons in the atoms is outershell that are able to attract others
Ionic radius
Radius of atoms ionic state
REMEMBER WEIRD TENDENCY
KNOW CLASSIFICATIONS
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Anion
Negative ion
N-1
Cation
Positive
Cu+2
Isotope
Equal number of protons but different amount of neutrons in the nucleus
Ex C-12 C-14