The Periodic Table of the Elements

An Introduction to Chemistry

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.

Excerpts

© 1990 Douglas Drenkow. All Rights Reserved.

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


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


Screenshot: The Periodic Table of the Elements (less Lanthanides & Actinides)

The Periodic Table of the Elements

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