84 Po Polonium 209.0 u

Polonium

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周期
6
族
16
ブロック
p-ブロック
相 (STP)
Solid

Polonium is a rare, highly radioactive element discovered by Marie Curie. It has been used as a heat source in space satellites.

About Polonium

Marie Curie identified polonium during her investigation of radioactive residues, and it remains among the rarest constituents of the crust. Its atomic number is 84, its relative atomic mass 209.0, and its configuration [Xe] 4f14 5d10 6s2 6p4 places it in group 16 of period 6 with an electronegativity of 2.0. It is a solid at standard temperature and pressure and is grouped with the post-transition metals. Intense radioactivity dominates every practical aspect of its handling. That same property has been turned to use: the decay heat of polonium has served as a compact thermal source aboard space satellites, where a small mass can sustain equipment temperature without any moving parts.

物理的特性

原子質量 209.0 u
STPにおける相 Solid

電子的特性

電気陰性度 2.0

電子配置

配置 [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴

Electron Shell Configuration

Polonium electron shell configuration Po 2e⁻ 8e⁻ 18e⁻ 32e⁻ 18e⁻ 6e⁻
Electron shell structure of Polonium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 18
6 (P) 6

Position in Periodic Table

Polonium position in the periodic table Po

ブロックと周期

ブロック

s p d f

周期

1 2 3 4 5 6 7

周期表

ランタノイド アクチノイド

Po を含む反応

Alpha Decay of Polonium-210

²¹⁰Po → ²⁰⁶Pb + ⁴He

Nuclear

Alpha Decay of Radon-222

²²²Rn → ²¹⁸Po + ⁴He

Nuclear

後遷移金属 をもっと見る

13 Al Aluminum 31 Ga Gallium 49 In Indium 50 Sn Tin 81 Tl Thallium 82 Pb Lead 83 Bi Bismuth

Frequently Asked Questions

What is Polonium?
Polonium (Po) is a chemical element with atomic number 84. It is a solid at standard temperature and pressure, classified as a 後遷移金属.
What are the key properties of Polonium?
Polonium has an atomic mass of 209.0 u.
What is the electron configuration of Polonium?
The electron configuration of Polonium is [Xe] 4f14 5d10 6s2 6p4. It is in the p-block of the periodic table.
What is the electronegativity of Polonium?
Polonium has an electronegativity of 2.0 on the Pauling scale.