Actinium chemical element of Mendeleev Periodic Table on pink background.
Palabras clave
actinium,
atom,
background,
chart,
chemical,
chemistry,
colourful,
concept,
design,
diagram,
education,
element,
element,
gas,
icon,
illustration,
laboratory,
laboratory,
massa,
material,
mineral,
number,
periodic,
physics,
poster,
radioactive,
school,
science,
set,
symbol,
table,
vector,
wallpaper,
weight
){kind=link}