Assertion: neptunium's number | /r/HasProperty | atomic
Facets:
Source sentences:
text: 6d1 7s2,Atomic number 93, Atomic mass
text: Neptunium (Np), radioactive chemical element of the actinoid series of the periodic table that was the first transuranium element to be artificially produced, atomic number 93.
text: Neptunium is identified with the atomic number 93, and its symbol is Np.
text: It has the atomic number 93 which means it has 93 protons and electrons in its atoms.
text: It has the atomic number 93 which means it has 93 protons and electrons in its atoms.
text: Neptunium, #"Np"# , has the atomic number 93.
text: It has the atomic number 93 which means it has 93 protons and electrons in its atoms.
text: Neptunium (chemical symbol Np, atomic number 93) is a silvery radioactive metallic element, belonging to the actinide series.