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Praseodymium (Pr) – Element 59 of the periodic table

Praseodymium (symbol Pr) is element number 59 of the periodic table and belongs to the “Lanthanide” category. Its atomic mass is about 140.91, and its phase under standard conditions is Solid. This element sits in period 6 and the f-block (Lanthanides) of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 21, 8, 2. The short electron configuration of Praseodymium is [Xe] 4f³ 6s². Known uses of Praseodymium include Magnetic alloys, Yellow ceramic color and Flashlights.

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Properties of Praseodymium

Atomic number
59
Chemical symbol
Pr
Atomic mass
140.91
Category
Lanthanide
Period
6
Block
f
Phase
Solid
Protons
59
Electrons
59
Neutrons (approx.)
82
Electron shells
2, 8, 18, 21, 8, 2
Outer-shell electrons
2
Discovered
Carl Auer von Welsbach (1885)

Electron configuration of Praseodymium

The electron configuration of Praseodymium (Pr), with 59 electrons, is shown below. The last shell (shell 6) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f³ 5s² 5p⁶ 6s²
Short configuration
[Xe] 4f³ 6s²
Last shell
6s²

What is electron configuration and how is it written?

Electron shells of Praseodymium

Distribution of 59 electrons of Praseodymium across shells K to P:

  1. K2
  2. L8
  3. M18
  4. N21
  5. O8
  6. P2

What is a lanthanide?

The lanthanides are the 15 elements from lanthanum to lutetium, part of the f-block, with very similar chemical properties; they are often grouped among the “rare earths”.

Uses of Praseodymium

Frequently asked questions about Praseodymium

What is the atomic number of Praseodymium?

The atomic number of Praseodymium (Pr) is 59; that is, every atom of it has 59 protons.

What is the electron configuration of Praseodymium?

The electron configuration of Praseodymium (Pr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f³ 5s² 5p⁶ 6s²; in short form it is [Xe] 4f³ 6s², and its last shell is 6s².

What is the chemical symbol of Praseodymium?

The chemical symbol of Praseodymium is Pr.

Where is Praseodymium located in the periodic table?

Praseodymium is located in period 6 and the f-block (Lanthanides) and belongs to the “Lanthanide” category.

What is the atomic mass of Praseodymium?

The atomic mass of Praseodymium is about 140.91 (atomic mass units).

What is the phase of Praseodymium under normal conditions?

The phase of Praseodymium under standard conditions is Solid.

What are the uses of Praseodymium?

Uses of Praseodymium include Magnetic alloys, Yellow ceramic color and Flashlights.

Who discovered Praseodymium?

Praseodymium was discovered by Carl Auer von Welsbach in 1885.

Elements in the same category as Praseodymium (Lanthanide)

Lanthanum (La)Cerium (Ce)Neodymium (Nd)Promethium (Pm)Samarium (Sm)Europium (Eu)Gadolinium (Gd)Terbium (Tb)Dysprosium (Dy)Holmium (Ho)Erbium (Er)Thulium (Tm)Ytterbium (Yb)Lutetium (Lu)

See all Lanthanides