不安定な同位体を持つ元素については、最も半減期の長い同位体の質量数を括弧に示す。

交互式的周期表在动态的布局里展现名字,电子,曲线,轨道,同位素,搜索.全面的描述.

Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.

對沒有穩定同位素的元素，其同位素中半衰期最長的重量在括號中標示。

Periodic Table Lesson Plans. With help from the American Assocation of Chemistry Teachers and American Chemical Society, Ptable has sponsored the creation of exciting new lesson plans developed by chemistry teachers which take advantage of the site's in-depth interactivity.Using these free lesson plans, you can engage with the periodic table in ways which were previously …

2021年6月4日 · Changelog October 3, 2024. Fix incorrect azimuthal phase handling for m values in orbitals. September 17, 2024. N,L,M instead of L,M,N for atomic orbitals.