Answer: atnos

AnswerCrossword Clue
ATNOSPeriodic table info: Abbr.
ATNOSChem. amts.
ATNOS1for H, 2 for He, etc.
ATNOS5 for B and 6 for C
ATNOSPeriodic law figs.
ATNOSB and O figures: Abbr.
ATNOS7 for N, 8 for O, etc.
ATNOSMeasures of elements: Abbr.
ATNOSAtomic numbers: Abbr.
ATNOSThey go from 57 to 71 in the lanthanide series: Abbr.
ATNOSProton counts: Abbr.
ATNOSPeriodic table elements: Abbr.
ATNOSElement's ID's
ATNOS1 for H and 2 for He, e.g.
ATNOSChem. class data
ATNOSChem. class figures
ATNOSB's 5 and C's 6
ATNOSPeriodic table figs.
ATNOSPeriodic table listings: Abbr.
ATNOSChem. class info