M2 Periodic System Z = 1..118

Periodic Table

Interactive full-grid atomic spectrum, heatmaps, state phase transitions, and audio chimes.

Periodic Law & Guide

Periodic Law: Chemical and physical properties of elements recur periodically when arranged by increasing atomic number (Z).

Columns (Groups 1-18): Elements share valence electron counts and similar chemical reactivities.

Rows (Periods 1-7): Indicate the principal quantum shell occupied by ground-state electrons.

Lanthanides & Actinides: 4f and 5f inner transition metals separated into rows 9 & 10 to preserve standard 18-column grid readability.

Heatmaps: Select from 10 quantitative properties to visualize periodic trends across periods and down groups.

Temperature Slider: Calculates instantaneous thermodynamic state of matter (Solid, Liquid, Gas) using NIST standard data.

Quick Element Filter

Property Heatmap (10 Modes)

Chemical Category

Orbital Block

Temperature (K) 298 K (25°C)

Solid Liquid Gas Unknown

1 H

Hydrogen

Reactive Nonmetal

1.008 amu

Gas @ 298K

Configuration: 1s

Electronegativity: 2.20

Ionization: 1312 kJ/mol

Density: 0.00009 g/cm3

Melting Pt: 14.0 K

Boiling Pt: 20.3 K

Oxidation: -1, +1

Discovered: 1766

Hydrogen is the lightest and most abundant chemical element in the universe, constituting roughly 75% of all baryonic mass.

Deep Element Analysis

Displaying 118 / 118 Elements

1
IA

2
IIA

3
IIIB

4
IVB

5
VB

6
VIB

7
VIIB

8
VIII

9
VIII

10
VIII

11
IB

12
IIB

13
IIIA

14
IVA

15
VA

16
VIA

17
VIIA

18
VIIIA

*(series) 57-71 Lanthanides (4f subshell filling) **(series) 89-103 Actinides (5f subshell filling)