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Neptunium is a
chemical element; it has
symbol Np and
atomic number 93. A
radioactive actinide metal,
neptunium is the
first transuranic element. It is...
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Neptunium (93Np) is
usually considered an
artificial element,
although trace quantities are
found in nature, so a
standard atomic weight cannot be given...
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Neptunium fluoride may
refer to:
Neptunium(III) fluoride, NpF3
Neptunium(IV) fluoride, NpF4
Neptunium(V) fluoride, NpF5
Neptunium(VI) fluoride, NpF6 This...
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Neptunium(IV) oxide, or
neptunium dioxide, is a radioactive,
olive green cubic crystalline solid with the
formula NpO2. It
emits both α- and γ-particles...
- but the
valence +4 is
preferred in
solid neptunium compounds.
Neptunium metal is very reactive. Ions of
neptunium are
prone to
hydrolysis and
formation of...
- of actinium, protactinium,
neptunium, and
plutonium exist as a
result of
radioactive decay and (in the case of
neptunium and plutonium)
neutron capture...
- 5-metre (60 in)
cyclotron at the
University of California, Berkeley. First,
neptunium-238 (half-life 2.1 days) was synthesized,
which then beta-deca**** to form...
- neutrinos, is 42.6 MeV. The 4n + 1
chain of
neptunium-237 is
commonly called the "
neptunium series" or "
neptunium cascade". In this series, only two of the...
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Neptunium tetrachloride is a
binary inorganic compound of
neptunium metal and
chlorine with the
chemical formula NpCl4. The
compound can be
prepared by:...
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Neptunium tetrabromide is a
binary inorganic compound of
neptunium metal and
bromine with the
chemical formula NpBr4. The
compound can be
prepared from...
