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alternative spellings include æther, aither, and ether), also
known as the
fifth element or quintessence, is the
material that
fills the
region of the universe...
-
containing this
block was
suggested by
Glenn T.
Seaborg in 1969. The
first element of the g-block may have
atomic number 121, and thus
would have the systematic...
-
periodic table In chemistry, a
transition metal (or
transition element) is a
chemical element in the d-block of the
periodic table (groups 3 to 12), though...
- Taylor-Wharton
Technip Energies Terrestrial Energy Topsoe True Zero - A
FirstElement Fuel
Brand Twelve Benefit Corporation (Twelve)
Wabtec Westlake International...
-
technetium (
element 43),
promethium (
element 61),
astatine (
element 85),
neptunium (
element 93), and
plutonium (
element 94). No
element heavier than...
- The
first, technetium, was
created in 1937.
Plutonium (Pu,
atomic number 94),
first synthesized in 1940, is
another such
element. It is the
element with...
-
Elementor Ltd. is an
Israeli software development company primarily known for its
WordPress website builder,
Elementor. The
Elementor website builder...
-
elements are
listed generally in the
order in
which each was
first defined as the pure
element, as the
exact date of
discovery of most
elements cannot be...
- 6d
transition series. The
actinide series derives its name from the
first element in the series, actinium. The
informal chemical symbol An is used in...
