# data[].attributes.body
[Rn] 5f4 6d1 7s2

# data[].attributes.body
Chemical properties: A melting point of 640°C (1,180°F) and a density of 20.45 grams per cubic centimeter.

Physical properties: A solid, silvery white metal

# data[].attributes.body
Videos:

https://www.youtube.com/watch?v=1D75B0_URbE

https://www.youtube.com/watch?v=-5GbBddJk7Q

Websites:

http://www.rsc.org/periodic-table/element/93/neptunium

http://www.chemicool.com/elements/neptunium.html

# data[].attributes.body
Type: Metal
Isotopes:20 Radioisotopes

# data[].attributes.body
Period: 7
Group: n/a, F-block

# data[].attributes.body
Spacecraft generators and terrestrial navigation beacons

# data[].attributes.headline
When Neptunium was discovered and who found it

# data[].attributes.subject
When Neptunium was discovered and who found it

# data[].attributes.body
Discovered by Edwin McMillan

Discovered in 1940

# data[].attributes.body
Element Name: Neptunium

Atomic Mass: 237 u

Atomic Number: 93

Symbol: Np