---
title: "Lead (Pb): Atomic Mass, Electron Configuration & Properties"
url: https://www.moldraw.com/elements/lead.html
description: "Lead (Pb), element 82: atomic mass 207.2, electron configuration [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p², group 14, period 6, p-block post-transition metal. Melting and boiling point, density, electronegativity and shells."
lang: en
publisher: Scidart Academy
generated: 2026-11-03
---
82Pb207.2

# Lead (Pb) – element 82

Lead is a chemical element with the symbol **Pb** and atomic number **82**. It is a post-transition metal in group 14, period 6 of the periodic table (p-block), and is a solid at room temperature.

Lead (Pb) has atomic number 82, atomic mass 207.2 u and electron configuration [Xe] 4f14 5d10 6s2 6p2.

[Download periodic table PDF](https://www.moldraw.com/printables/periodic-table.pdf)[Open interactive periodic table](https://www.moldraw.com/tools/free-chem-tools/interactive-periodic-table.html)

## Lead facts

| Symbol | Pb |
| --- | --- |
| Atomic number | 82 |
| Atomic mass | 207.2 u (g/mol) |
| Category | post-transition metal |
| Group | group 14 |
| Period | 6 |
| Block | p-block |
| Phase at 20 °C | Solid |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p2 |
| Noble-gas notation | [Xe] 4f14 5d10 6s2 6p2 |
| Electrons per shell | 2, 8, 18, 32, 18, 4 |
| Valence electrons | 4 |

## Bohr model and shells

Lead has 82 electrons in 6 shells: 2, 8, 18, 32, 18, 4. Full configuration and noble-gas notation are in the table; work out any element or ion with the [electron configuration calculator](https://www.moldraw.com/tools/free-chem-tools/electron-configuration-calculator.html).

## Physical and atomic properties

| Melting point | 600.61 K (327.5 °C) |
| --- | --- |
| Boiling point | 2022 K (1748.8 °C) |
| Density | 11.34 g/cm³ |
| Electronegativity (Pauling) | 1.87 |
| Electron affinity | 34.4204 kJ/mol |
| Ionization energies | 715.6, 1450.5, 3081.5 kJ/mol (1st, 2nd, 3rd) |
| Molar heat capacity | 26.65 J/(mol·K) |
| Discovered by | Middle East |

Use the atomic mass in the [molar mass calculator](https://www.moldraw.com/tools/free-chem-tools/molar-mass-calculator.html) for any formula containing Pb.

## Position in the periodic table

Tap any element to open its page.

## Frequently asked questions

### What is the atomic mass of lead?

The atomic mass of lead is 207.2 u, so one mole of lead atoms weighs 207.2 g.

### What is the electron configuration of lead?

Lead has 82 electrons: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p², or [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p² in noble-gas notation. Electrons per shell: 2, 8, 18, 32, 18, 4.

### How many valence electrons does lead have?

Lead has 4 valence electrons (group 14).

### Is lead a metal?

Yes. Lead is a post-transition metal.

### Where is lead on the periodic table?

Lead is in group 14, period 6, in the p-block.

Data: [Periodic-Table-JSON](https://github.com/Bowserinator/Periodic-Table-JSON) (CC BY-SA 3.0); standard atomic weights from IUPAC (abridged). Values in brackets are the mass number of the longest-lived isotope.