abbreviation
alkaline
atom
atomic
atomic number 88
basic
black
bone
cancer
chemical
chemistry
earth
education
electron
element
flat
icon
information
lab
laboratory
mass
material
mendeleev
metallic
molecular
molecule
name
number
periodic
physics
ra
radioactive
radium
school
science
scientific
square
structure
symbol
table
technology
therapy
weight
white
定額
Radium, Ra, periodic table element with name, symbol, atomic number and weight. Alkaline earth metal with radioactive properties, formerly used in medical therapy and as a component of certain types of paint.の素材 [FY310198877685]
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