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Chapter 4 sophmore chemestry

Terms

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Who discovered the Method of determining atomic mass?
Cannizzaro
Who Pulled Rare earth elements out of the main table
Seaborg
Given credit for determiningthe first periodic table, arranged elements based on increasing atomic mass
Mendelem
Arranged the elements according to increasing number of protons or atomic numbers
Mosley
Discovered most of the noble gasses
Ramsay
Negative ion
Anion
Positive ion
Cation
Bonded atoms that has a positive or negative charge
ion
Energy required to remove electrons from a neutral atom
ionization energy
Determines the measure of a atom to determine the ability of a bond
electronegativity
Electron acquired by a neutral atom is called a
Electron afinity
VESPER
valence shell electron pair repulsion
Degrees of electon replusion
1.Greatest between a pair of un bonded electrons
2.second degree is between a pair of bonded and a pair of unbonded
3.Least replusion between 2 pairs of bonded electrons
Ionic
Polar covalent
Non polar covalent
> 1.5 75%
1.5-0.3 50%-5%
.3- <5%

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