abstract
affinity
atom
atomic
carbon
carbon element
chemistry
colorless
configuration
dioxide
education
electron
electronegativity
element
elements
formula
fundamental
gas
info
information
ionization
laboratory
mass
medical
mendeleev
molecular
molecule
name
number
periodic
periodic table
periodictable
physics
properties
quantum
research
science
scientific
sign
simple
square
structure
style
substance
symbol
table
technology
universe
weight
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