82 Pb Lead 207,2 u

Lead

Período
6
Grupo
14
Bloco
p-bloco
Fase (STP)
Solid

Lead is a dense, soft, toxic post-transition metal used since antiquity. It is used in batteries, radiation shielding, and solder.

About Lead

Few metals have been worked for as long as lead, which humans have smelted since antiquity. The element carries atomic number 82 and a relative atomic mass of 207.2, and its [Xe] 4f14 5d10 6s2 6p2 configuration puts it in group 14 of period 6, the p-block column headed by carbon. It is a dense, soft solid at standard conditions, with an electronegativity of 1.87. Toxicity is its defining modern constraint and has driven its removal from fuels, paints and plumbing across much of the industrialised economy. Three applications nevertheless persist on technical grounds: lead-acid batteries, radiation shielding, and solder. Density is the property behind the shielding role, while the low melting behaviour of lead alloys underpins their use as joining metals.

Propriedades físicas

Massa atômica 207.2 u
Fase em STP Solid

Propriedades eletrônicas

Eletronegatividade 1.87

Configuração eletrônica

Configuração [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²

Electron Shell Configuration

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

Position in Periodic Table

Lead position in the periodic table Pb

Bloco e período

Bloco

s p d f

Período

1 2 3 4 5 6 7

Tabela Periódica

Lantanídeos Actinídeos

Reações envolvendo Pb

Lead-Acid Battery Discharge

Pb + PbO₂ + 2H₂SO₄ → 2PbSO₄ + 2H₂O

Electrochemical

Lead Displacing Silver from Silver Nitrate

Pb + 2AgNO₃ → Pb(NO₃)₂ + 2Ag

Single Replacement

Lead Dioxide and Sulfuric Acid (Lead-Acid Battery Discharge)

PbO₂ + Pb + 2H₂SO₄ → 2PbSO₄ + 2H₂O

Redox

Alpha Decay of Polonium-210

²¹⁰Po → ²⁰⁶Pb + ⁴He

Nuclear

Compounds Containing Lead

Lead(II) Oxide

PbO

Lead(II) Sulfide

PbS

Lead Zirconate Titanate

Pb(Zr,Ti)O₃

Mais Metal Pós-Transição

13 Al Aluminum 31 Ga Gallium 49 In Indium 50 Sn Tin 81 Tl Thallium 83 Bi Bismuth 84 Po Polonium

Explore on Science FYI

MineralFYI
Galena

Primary lead ore — lead sulfide (PbS)

Frequently Asked Questions

What is Lead?
Lead (Pb) is a chemical element with atomic number 82. It is a solid at standard temperature and pressure, classified as a metal pós-transição.
What are the key properties of Lead?
Lead has an atomic mass of 207.2 u.
What is the electron configuration of Lead?
The electron configuration of Lead is [Xe] 4f14 5d10 6s2 6p2. It is in the p-block of the periodic table.
What is the electronegativity of Lead?
Lead has an electronegativity of 1.87 on the Pauling scale.