The Periodic Table of the Elements

EXPLORE the Periodic Table of the Elements, in overview and by atomic numbers, chemical symbols, and chemical names.

DISCOVER trends within groups and periods for atomic weight, melting point, boiling point, bond length, electronic configuration, oxidation state(s), first ionization potential, and electron affinity.

ENRICH general chemistry and engineering.

This title is available only as software.

Menus

The Periodic Table of the Elements
- All the Elements Except the Lanthanides & Actinides
- The Lanthanides & Actinides
Elements by Atomic Number (1 to 107)
Elements by Chemical Symbol (Ac to Zr)
Elements by Name (Actinium to Zirconium)
Trends Within Groups (1 to 18)
- Atomic Weight
- Boiling Point
- Melting Point
- Bond Length (between like atoms)
- Electronic Configuration
- Oxidation State(s)
- First Ionization Potential
- Electron Affinity
Trends Within Periods (1 to 7)
- Atomic Weight
- Boiling Point
- Melting Point
- Bond Length (between like atoms)
- Electronic Configuration
- Oxidation State(s)
- First Ionization Potential
- Electron Affinity

Sample Material

Sample Entry: Hydrogen
Group 1: Trend for Electronic Configuration
Screenshot: The Periodic Table of the Elements (less Lanthanides & Actinides)
Download and Access the Entire Database
- Click here to download the PERTABLEZIP zip folder.
- Extract all the files from the downloaded zip folder.
- Read the readme.txt file.
- Open the PERTABLE folder.
- Double-click on the PTE application, to access the database.

Sample Entry: Hydrogen

1) HYDROGEN [H]

GROUP: 1

PERIOD: 1

ATOMIC WEIGHT: 1.00794

MELTING POINT: -259.34°C

BOILING POINT: -252.87°C

H-H BOND LENGTH: 0.74611 Å

ELECTRONIC CONFIGURATION: 1s1

OXIDATION STATE(S): -1, +1

FIRST IONIZATION POTENTIAL: 13.598 eV

ELECTRON AFFINITY: 0.754209 eV

Back to Sample Material

Group 1: Trend for Electronic Configuration

1	HYDROGEN [H]	1s1
3	LITHIUM [Li]	K 2s1
11	SODIUM [Na]	KL 3s1
19	POTASSIUM [K]	KL 3s2,p6,d0 4s1
37	RUBIDIUM [Rb]	KLM 4s2,p6,d0,f0 5s1
55	CESIUM [Cs]	KLM 4s2,p6,d10,f0 5s2,p6,d0,f0 6s1
87	FRANCIUM [Fr]	KLMN 5s2,p6,d10,f0 6s2,p6,d0,f0, 7s1