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Periodic Table (Random Stuff (Molecular Mass, Number of Protons, Number of…
Periodic Table
Random Stuff
Molecular Mass
Number of Protons
Number of Neutrons
Number of Electrons
Metal, Nonmetal, SemiMetals
Physical state of the element
Groups
Halogens
Fluorine
Chlorine
Bromine
Iodine
Alkali Metals
Lithium
Sodium
Potassium
Rubidium
Cesium
Francium
Alkali Earth Metals
Group II Elements
Noble Gases
Group 18 elements
They rarely react with other elements as their valence electrons are all filled.
Transition Metals
Quantum numbers
Principle Quantum Number
Determines the Energy level of the element
n: 1,2,3,4; can't equal 0
Angular Quantum Number
Describes the shape of the orbital
l: 0,1,2,3
Magnetic Quantum Number
Describes the orientation inside the orbital
m: -2,-1,0,1,2
Spin Quantum Number
Electron configuration
S orbital (1s2)
P orbital (2p6)
D orbital (3d10)
F orbital (4f14)
Periodic Trends
Electronegativity
Increases left to right down a row
Decreases going down the column
Fluorine is the most electronegative
Ionization Energy
Increases left to right down a row
Decreases going down the column
Atomic size
Increases going down the column
Shells are added
Gets smaller going left to right down a row
Electrons are added to the already present shells