113 Nh 286
Nihonium
UNKNOWN, PROBABLY TRANSITION METAL
Phase: Solid
Discovered: RIKEN
Block: P
Summary
Nihonium is a chemical element with atomic number 113. It has a symbol Nh. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and is extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of 20 seconds.
Source: WikipediaPhysical Properties
Atomic Mass 286 u
Density 16 g/cm³
Melting Point 700 K
Boiling Point 1430 K