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Actinide
Meaning
Noun
●
In Chemistry, Radioactivity & Types of chemical element:
Any of the 15
of the
from
to
that are
under the
, to which they have
chemistry.
●
●
In Chemistry & Types of chemical element:
Any of the 14
s from
to
(actinium having been
because it was
to be a d-block
in the past).
Sourced from
Wiktionary
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