4.6 Valence bond theory Flashcards
how do covalent bonds form
through the sharing of e- by adjacent atoms, can only occur when orbital of two atoms overlap
what does increased overlap of e- bring closer
e- and the nuclei while decreasing e- repulsion
what are hybrid orbitals
used to hyrbidize elements, the promotion of e- from on block to another- after hybridization degenerate orbitals are formed
when do you hybridize
if # of lone e- doesn’t equal and is less then # of domains for molecules
what is valence bond theory
covalent bond forms when atomic orbitals, each with an unparied e- overlap
what is a sigma bond
two lobes of two orbital directly overlap (head to head) along an axis connecting the nuclei
what is a pi bond
when the sides of the lobes of two orbitals overlap (multiple bonds)
