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nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table
Periodic Table of Elements - PubChem
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table/atomic-radius
Atomic Radius | Periodic Table of Elements - PubChem
The atomic radius of a chemical element is a measure of the size of its atom, usually, the distance from the center of the nucleus to the outermost isolated electron.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table/electronegativity
Electronegativity | Periodic Table of Elements - PubChem
Explore how electronegativity changes with atomic number in the periodic table of elements via interactive plots.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table/density
Density | Periodic Table of Elements - PubChem
Explore how density changes with atomic number in the periodic table of elements via interactive plots.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table/atomic-mass
Atomic Mass | Periodic Table of Elements - PubChem
Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table/boiling-point
Boiling Point | Periodic Table of Elements - PubChem
Explore how boiling point changes with atomic number in the periodic table of elements via interactive plots.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/element/Lithium
Lithium | Li (Element) - PubChem
Lithium is a chemical element with symbol Li and atomic number 3. Classified as a n alkali metal, Lithium is a solid at room temperature.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/periodic-table/ionization-energy
Ionization Energy | Periodic Table of Elements - PubChem
Explore how ionization energy changes with atomic number in the periodic table of elements via interactive plots.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/element/Helium
Helium | He (Element) - PubChem
Periodic Table element Summary Helium. Helium is a chemical element with symbol He and atomic number 2. Classified as a noble gas, Helium is a gas at room temperature.
nih.gov
https://pubchem.ncbi.nlm.nih.gov/element/Magnesium
Magnesium | Mg (Element) - PubChem
Magnesium is a chemical element with symbol Mg and atomic number 12. Classified as a n alkaline earth metal, Magnesium is a solid at room temperature.
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