ch 5 Flashcards
(25 cards)
ionic bond elements
metal + non
dissimilar
ionic bond electrons
transfer
ionic bonds molecules
no discrete molecules, clump of ions
ionic bonds phase of matter @ room temp
solids
ionic bonds electric conductivity
form electrical-conducting aqueous solutions
covalent bonds elements
similar/same
covalent bonds electrons
sharing
cov. bonds molecules
basic structural unit = molecule
cov. bonds phases of matter @ room temp
can be ANY of 3
cov. bonds electric conductivity
form NON electrical conducting aqueous solutions
covalent bond
chemical bond resulting from 2 nuclei SHARING electrons
how to determine # of bonds formed (lewis structures for molecular compounds)
missing e- to attain octet = # of bonds formed
single bond
2 atoms share 1 pair of e-
which groups cannot form multiple bonds
VII and hydrogen
coordinate covalent bonds
special case where both e- in bond come from one of 2 atoms in a bond
- only when donor atom has non binding e- pair
how to know which is central atom
SiS POC
least electroneg.
electroneg.
relative attraction atom has for e- in a bond
explains why elem loses/gains e-
electroneg. trends on periodic table
inc. going up
inc. from left to right
bond polarity
measure of inequality in e- sharing btwn 2 bonded atoms
non polar cov. bond
= electroneg. (e- shared) on atoms of a bond
polar cov. bond
unequal electroneg. (e- shared) on atoms of a bond
polarity-ionic relationship
polarity inc. –> bond more ionic
nonpolar molecule
symmetrical e- dist.
bond polarities cancel
polar molecule
asymmetrical e- dist.
