Engineered Labs

Neptunium Element Cube

$53.55
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Neptunium's atomic number is 93 and its symbol is Np. It is is a hard, silvery, ductile, radioactive actinide metal, and can be found in 5 different colors depending on its oxidation state.

Neptunium's position in the periodic table just after uranium, named after the planet Uranus, led to it being named after Neptune, the next planet beyond Uranus. Also, it was the first trans uranium element, with an atomic mass heavier than uranium, once thought to be the heaviest element.

It is normally used to form Plutonium for spacecraft and military applications, but you may find neptunium in your smoke detector. Ionisation-type smoke detectors use tiny amounts of the radioisotope americium-241, but over time this decays into neptunium-237.

This display is contained within crystal clear lucite acrylic.

Please note that this item might be classified as hazardous material in certain countries. We suggest checking local guidelines to ensure compliance before placing your order.

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  • Engineered Labs (Rexburg)
    Pickup available, usually ready in 24 hours

    350 North 2nd East
    Rexburg ID 83440
    United States

    +12532594567

Product information

Wash with mild soap or detergent and lukewarm water. Use a clean, soft cloth, or sponge. Rinse and blot dry with a damp cloth or chamois.

*Never use abrasive cleaners, household cleaners, window-cleaning fluids, scouring compounds, gritty cloths, or strong solvents such as alcohol, acetone, carbon tetrachloride, etc.*

To maintain the brilliant luster of acrylic, wax and occasionally with a quality grade of automobile paste wax (NOT A CLEANER WAX COMBINATION.) Apply a thin coat with a clean, cotton flannel cloth. Then wipe with a clean damp cloth. NEVER USE HOUSEHOLD SPRAY WAXES.

Proudly made in the U.S.A.