Assertion: boron | /r/HasProperty | four-coordinated
Facets:
value: respectively
type: DEGREE
Source sentences:
text: That is, one of boron’s 2s electrons is promoted to a 2p orbital, giving the outer electron configuration 2s12p2; the s and p orbitals can then be mixed to give sp2 and sp3 hybrids, which allow boron to be three- and four-coordinated, respectively.