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CHM 219 Final questions and answers verified answers||Latest 2024/2025
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CHM 219 Final questions and answers verified answers||Latest 2024/2025
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CHM 219 FinalBond with electronegativity greater than 1.7
ionic
bond with electronegativity difference between 0.5 and 1.7
polar covalent bond
bond with electronegativity difference of 0.5 or less
covalent
bond with electronegativity difference of 0
pure covalent bond
T/F: it is okay for resonance structures to have different numbers of electrons from one another
if the formal charges do not balance out to the same overall total
false
T/F: Moving double bonds in electron resonance is not allowed, as that would change the
connectivity of the atoms in the molecule
false
T/F: A double-barbed arrow is used when drawing resonance structures to show that a pair of
electrons is moving.
True
T/F: A resonance curved arrow points to where the electrons being distributed end up
True
Linear bond angle
180 degrees
, electron pair distribution for a linear molecular geometry
2 bonded electron pairs, 0 lone pairs, 2 total electron pairs
Bond angle for bent geometry with 2 bonded pairs, 1 lone pair and 3 total electron pairs
107
Trigonal planar bond angle
120
electron distribution for trigonal planar
3 bonded pairs, 0 lone pairs, 3 total pairs
trigonal pyramidal bond angle
107
trigonal pyramidal electron distribution
3 bonded pairs, 1 lone pair, 4 total pairs
angular/bent molecular geometry with 2 bonded pairs and 2 lone pairs
105 degrees
trigonal planar bond angle
109.5
electron distribution for trigonal planar geometry
4 bonded pairs of electrons
why was the theory of atomic orbital hybridization developed?
to attempt to explain the conflict between the electron configuration and lewis dot diagram of an
element that sometimes differ in describing where valence electrons are distributed (into what
atomic orbitals) and which electrons are unpaired (used to make bonds)
Use for a bromine test
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