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Chem Chap 6

Chemical Bonding - Section 1

QuestionAnswer
A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds teh atoms together Chemical bond
Why are most atoms chemically bonded to each other Most atoms are less stable existing by themselves than when they are combined. By bonding with each other, atoms decrease in potential energy, thereby creating more stable arrangements of matter.
Main-group metals tend to lose electrons to form what type of ions Positive ions or cations.
Non-metals tend to gain electrons to form what type of ions Negative ions or anions.
Chemical bonding that results from the electrical attraction between cations and anions is called Ionic Bonding
Results from the sharing of electron pairs between two atoms Covalent Bonding
True or False: Bonding between atoms of different elements are rarely purely ionic or purely covalent? True
A measure of an atom's ability to attract electrons. Electronegativity
The degree to which bonding between atoms of two elements is ionic or covalent can be estimated by doing what Calculating the difference in the elements' electronegativities
Bonding between atoms with an electronegativity differenct of 1.7 or less has an ionic character bonding of 50% or less
Compounds with 50% or less are classified as Covalent
Bonding between two atoms of the same element is covalent
A covalent bond in which the bonding electrons are shared equally by the bonded atoms, resultingin a balanced distribution of electrical charge. Nonpolar-covalent bond
Bonds having 0% to 5% ionic character, corresponding to electronegativity differences of roughly 0 to 0.3 are generally considered to be what type of bond non-polar-covalent bond.
Bonds that have an uneven distribution of charge. Polar
A covalent bond in which the bonded atoms have an unequal attraction for teh shared electrons is Polar-covalent bond
Created by: tbstinso