1.3 bonding Flashcards
(14 cards)
Define electroegativity
where highest + lowest
power of an atom to attract a pair of electron in covalent bond
grp 7 highest
grp 0 0 elctronegativity
dative covalent bond
lone pair of electron is donated
van der waal force
uneven distribution of electron
- induce dipole in neighboring molecules = dipole cancel
why diff BP
- vdw force / H bond / dipole-dipole
- ↑/↓ intermolecular force
- ↑/↓ energy break bond
CH4
bond angle + shape name
109.5
tetrahedral
BF3
bond angle + shape name
120
trigonal planar
NH3
bond angle + shape name
107
trigonal pyramidal
CO2
bond angle + shape name
180
linear
H2O
bond angle + shape name
104.5
non-linear
PF5
bond angle + shape name
90,120
trigonal bipramindal
SF6
bond angle + shape name
90
octahedral
Why higher intermolecular force
- more electron
- larger molecule
- pack more closely tgt
Why high MP of ionic compound
- strong electrostatic attraction between…
- need loads of energy to break force
H bond - attraction between…
Electron deficient H atom + lone pair of electron on N/O/F
