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Polonium (Po) – Element 84 of the periodic table

Polonium (symbol Po) is element number 84 of the periodic table and belongs to the “Metal” category. Its atomic mass is about 209, and its phase under standard conditions is Solid. This element sits in period 6 and group 16 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 32, 18, 6. The short electron configuration of Polonium is [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴. Known uses of Polonium include Neutron source, Static electricity removal and Scientific research.

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Properties of Polonium

Atomic number
84
Chemical symbol
Po
Atomic mass
209
Category
Metal
Period
6
Group
16
Phase
Solid
Protons
84
Electrons
84
Neutrons (approx.)
125
Electron shells
2, 8, 18, 32, 18, 6
Outer-shell electrons
6
Discovered
Marie Curie (1898)

Electron configuration of Polonium

The electron configuration of Polonium (Po), with 84 electrons, is shown below. The last shell (shell 6) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴
Short configuration
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴
Last shell
6s² 6p⁴

What is electron configuration and how is it written?

Electron shells of Polonium

Distribution of 84 electrons of Polonium across shells K to P:

  1. K2
  2. L8
  3. M18
  4. N32
  5. O18
  6. P6

What is a metal?

The p-block metals (the post-transition metals) are usually softer than the transition metals and have lower melting points.

Uses of Polonium

Frequently asked questions about Polonium

What is the atomic number of Polonium?

The atomic number of Polonium (Po) is 84; that is, every atom of it has 84 protons.

What is the electron configuration of Polonium?

The electron configuration of Polonium (Po) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴; in short form it is [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴, and its last shell is 6s² 6p⁴.

What is the chemical symbol of Polonium?

The chemical symbol of Polonium is Po.

Where is Polonium located in the periodic table?

Polonium is located in period 6 and group 16 and belongs to the “Metal” category.

What is the atomic mass of Polonium?

The atomic mass of Polonium is about 209 (atomic mass units).

What is the phase of Polonium under normal conditions?

The phase of Polonium under standard conditions is Solid.

What are the uses of Polonium?

Uses of Polonium include Neutron source, Static electricity removal and Scientific research.

Who discovered Polonium?

Polonium was discovered by Marie Curie in 1898.

Elements in the same category as Polonium (Metal)

Aluminum (Al)Gallium (Ga)Indium (In)Tin (Sn)Thallium (Tl)Lead (Pb)Bismuth (Bi)Nihonium (Nh)Flerovium (Fl)Moscovium (Mc)Livermorium (Lv)

See all Post-transition metals

Polonium’s group 16 neighbours

Oxygen (O)Sulfur (S)Selenium (Se)Tellurium (Te)Livermorium (Lv)

Group 16 of the periodic table