Atomic Number 21 (+ facts: Sources, Uses, Color and more...) 2022

All atoms have an atomic number. But what is the chemical element that has 21 as atomic number?

The answer is Scandium and there is so much cool stuff about Scandium that people don't know that I would keep reading if I were you.

Alright now to the facts!

Scandium Overview

Atomic Number

21

Learn more about the atomic number.

Description

Fairly soft, silvery-white metal. Eighth most abundant 'rare earth' found in the earth's crust (5.0 ppm).

Atomic Symbol

Sc (Scandium)

Discovery

Discovered By: Lars Nilson

Year: 1879

Location: Sweden

State at 20 °C

Solid

Sources

Occurs mainly in the minerals thortveitile (~34% scandium) and wiikite. Also in some tin and tungsten ores. Pure scandium is obtained as a by-product of uranium refining.

Uses

Scandium metal is used in some aerospace applications. Scandum oxide (Sc2O3) is used in the manufacture of high-intensity electric lamps. Scandium iodide (ScI3) is used in lamps that produce light having a color closely matching natural sunlight.

Atomic Mass

44,95591

Learn more about the atomic mass.

Name Origin

Latin: Scandia, Scandinavia.

Want to learn more details and data? Check my Elements Comprehensive List.

Colored Periodic Table

Need an editable periodic table to edit? Maybe add your school logo, work team or anything else to maker your paper look cool?

Along with basic atom / element information (like Scandium-(21) atomic number and all the other atomic data), it also comes with color coded info about: State (Gas, Liquid or Solid at room temperature), Groups/series details and much more...

How about an incentive to share this post? (You will help other colleagues find this blog)

Download and enjoy this complete and colored periodic table for you to edit and enjoy. It's in an editable excel format or .ods (open).
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