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chp 6 chem test

QuestionAnswer
ionic bonding chemical bonding that results from electrical attraction between cations and anions transfer electrons
Covalent bonding results from sharing of electrons between two atoms
Describe ionic bonds non-metals to metals , EN 1.7, make compunds,
Describe covalent bonds non-metals and non-metals, less than 1.7 EN, molecules
electronegativity measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound
What are the 7 diatomic elements H2,N2,O2,F2,CL2,BR2,I2
What are the expiermental diffrences on ionic bonds form crystal lattice, string bonds, high energies, harrd and brittle, soluble in water, good conductrs, high melting and boiling point
what are the expiermntal diffrences in a covalent bond bonds not as strong energies low, properties determined by bond and shape , not electric conductive, low melting and boiling point
bond lengths as bond length increases the bond energy to break it decreases
molecule a netural group of atoms held together by covalent bonds
molecular compound a chemical compound whos simplest units are molecules
chemical formula tells the amount of atoms of each kind in a chemical compound with the use of atomic symbols
molecular formula shpws the type and number of atoms combined in a single molecule in a molecular compound
electron dot notation an electron configuration notation in which only valence electrons of an atom of an elemnt indicates where the dots are placed
what 3 elements are an exception to the octect rule H, B, Be
ionic compound have positive and negative charge
polynomatic ion a charged group of covalently bonded atoms
VSEPR theory states that repulsion between the sets of valence level electrons surrounding an atom cause the set to be as far apart from each other
Linear 2 elements, 0 lone pairs
TRngular-planar 3 atoms, O lone pairs
Bent 2 atoms, 1/2 lone pairs
tectrahedral 4 atoms, 0 lone pairs
trional pyramid 3 atoms, 1 lone pair
I f the lone paor is 0 non polar .3
if lone pair is 1 and up polar 1.7
polarity of a molecule is determined by the electronegativity difference and shape
Created by: BB2424
 

 



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