Elements
82

Pb

Lead

Lead (Pb) is a soft gray metal that has the atomic number 82 in the periodic table in Group 14. It has the symbol Pb.

Lead as a metal has been known about since Roman times where it was used to make coins and utensils as well as in plumbing. It was called Plumbum hence the symbol Pb. Lead is used in batteries in cars and also has a wide range of uses in shielding from radiation and x-rays in buildings. Lead is a poisonous metal so must be handled carefully. It is a solid metal at room temperature with a melting point of 327°c and a boiling point of 1749°c.

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FAQ's

What is the Melting Point for Lead?

Lead has a Melting Point of 327.5°F, meaning at 327.5°F it will turn to a liquid.

What is the Boiling Point for Lead?

Lead has a Boiling Point of 1740°F, meaning at 1740°F it will turn to a Gas.

What is the Electronegativity of Lead?

Lead's Electronegativty is 2.33. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Lead?

Lead has a Heat of Vaporization of 177.7 kJ/mol.

Uses

Used in solder, shielding against radiation and in batteries.

Sources

Found most often in ores called galena or lead sulfide (PbS). Some is found in its native state.

82
Protons
82
Electrons
125
Neutrons

Pb

Element Symbol
Pb
Atomic Weight
207.2
Atomic Number
82
State
Solid
Melting Point
Unknown
327.5
°C
Boiling Point
1740
Unknown
°C
Heat of Vaporization
177.7
Unknown
kJ/mol
Crystal Structure
Cubic: Face centered
Thermoconductivity
0.353
Unknown
W/cmK
Shells
2,8,18,32,18,4
Group
Post-Transition Metal
Period
6
Block
P Block
Orbitals
[Xe] 4f14 5d10 6s2 6p2
Coefficient of Thermal Expansion
28.8 10^-6 K^-1
Covalent Radius
1.47 Å
Density at 293K
11.34 g/cm³
Electrical Conductivity
0.0481 10^6/cm ohm
First Ionization Potential
7.4167 V
Second Ionization Potential
15.028 V
Third Ionization Potential
31.943 V
Ionic Radius
1.19 (+2) Å
Oxydation States
4,(2)
Lattice Parameter
4.9504 Å
Lattice Parameter 2
--
Lattice Parameter 3
--
Pronounced

LED

Discovered by

Known to the ancients.

Discovery date

3000 BC

Orbital configuration
2,8,18,32,18,4

Download the Periodic Table

Explore Other Post-Transition Metals

114.818
49

In

Indium
204.38
81

Tl

Thallium
118.71
50

Sn

Tin
69.723
31

Ga

Gallium
26.982
13

Al

Aluminium
209
84

Po

Polonium
208.98
83

Bi

Bismuth
The post-transition metals are the ones found between the transition metals (to the left) and the metalloids (to the right). They include aluminium (Al), gallium (Ga), indium (In), thallium (Tl), tin (Sn), lead (Pb) and bismuth (Bi).
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