Neptunium is not combustible but pyrophoric as a powder.
Neptunium is a metal.
Neptunium is not brittle.
Neptunium has not a smell.
Neptunium trifluoride is an intermediate for the preparation of neptunium metal.
Neptunium is not in foods.
Yes, neptunium is a metal.
Neptunium as a powder is pyrophoric.
Neptunium has a metallic appearance.
Neptunium is a metal, it is not corrosive.
Neptunium is not a flammable material.
Neptunium is an individual element; isotopes of neptunium are not separated.
Neptunium is an artificial element.Amounts of natural neptunium are absolutely nonsignificant.