[
UK
/nɛptjˈuːniəm/
]
[ US /nɛpˈtuniəm/ ]
[ US /nɛpˈtuniəm/ ]
NOUN
- a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium
How To Use neptunium In A Sentence
- In Basra they have found the bombs that were used had enriched uranium in them - neptunium.
- All isotopes of neptunium are radioactive, the longest lived being neptunium - 237 with a half life of 2,140,000 years.
- Just as Neptune comes right after Uranus in the solar system, so, too, does neptunium come right after uranium in the periodic table.
- The new elements were named neptunium and plutonium, respectively.
- When struck by neutrons, nuclei of neptunium and other nuclear materials can fission into two smaller nuclei.
- They had to be named after the next two planets, and so were called neptunium and plutonium - both found at Berkeley using the new cyclotron.
- The Berkeley cyclotron created many elements never found in nature - including plutonium, which directly follows neptunium in the periodic table.
- The Berkeley cyclotron created many elements never found in nature - including plutonium, which directly follows neptunium in the table.
- As beta decay does not change the atomic mass, the isotope of the new element number 93, neptunium, also has mass 239.
- Each tank round is 10 pounds of solid uranium - 238 contaminated with plutonium, neptunium, americium.