Periodic Trends

Element Atomic Number Atomic Radius (nm) 1st Ionization Energy (kJ/mol) Electronegativity Hydrogen 1 0.037 1312 2.1 Helium 2 0.050 2372 - Lithium 3 0.152 519 1.0 Beryllium 4 0.111 900 1.5 Boron 5 0.088 799 2.0 Carbon 6 0.077 1088 2.5 Nitrogen 7 0.070 1406 3.0 Oxygen 8 0.066 1314 3.5 Fluorine 9 0.064 1682 4.0 Neon 10 0.070 2080 - Sodium 11 0.186 ... ................
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