"valence" -
key terms from Wikipedia
adams
chromatic
valence
color
space
moreton
valence
number
of
valence
electrons
valence
valence
band
valence
bond
valence
bond
approach
valence
bond
model
valence
bond
theory
valence
electron
valence
electrons
valence
house
valence
quark
valence
quarks
valence
shell
valence
technology