Who has an atomic mass of 56?

Iron
Iron, isotope of mass 56.

Why is thorium named after Thor?

In 1815, for example, Berzelius isolated a new element from a mineral sent to him from the Swedish mining town of Falun and named it thorium after the Scandinavian god of thunder, Thor….

Discovery date	1829
Origin of the name	Thorium is named after Thor, the Scandinavian god of war.
Allotropes

What is Protactinium used for?

Currently, protactinium is usually extracted from used nuclear fuel. Due to its scarcity, high toxicity, and high radioactivity, protactinium has no current practical uses other than basic scientific research.

What is the mass number of thorium?

232.03806 u
Thorium/Atomic mass

What is the mass of iron-56?

55.9349375
Iron-56

General
Isotope mass	55.9349375(7) u
Spin	0+
Excess energy	−60601.003± 1.354 keV
Binding energy	492253.892± 1.356 keV

How many electrons does an isotope of iron 56 contain?

The 56Fe2+ is 26 protons, 30 neutrons, 24 electrons.

Is protactinium rare or common?

Occurrence. Protactinium is one of the rarest and most expensive naturally occurring elements. It is found in the form of two isotopes – 231Pa and 234Pa, with the isotope 234Pa occurring in two different energy states.

What color is protactinium?

Basic Information

Name	Protactinium
Block in periodic table	f-block
Color	Silvery metallic
Classification	Metallic
Melting point	1845 K (1572°C or 2862°F)

What is 234 on the periodic table?

Please visit the Thorium element page for information specific to the chemical element of the periodic table….Thorium-234.

PubChem CID	104875
Molecular Formula	Th
Synonyms	Thorium-234 15065-10-8 Thorium, isotope of mass 234 Thorium 234 DTXSID90891767
Molecular Weight	234.04360
Dates	Modify 2021-12-05 Create 2005-08-08