Chemical Elements In Group 18

2HeHelium4.0026Period: 1Melting Point: -272Boling Point: -269 Vanderwaals Radius: 122Ionization Energy: 24,5874Discovery Year: 1895Inventor: Ramsay, Sir William & Strutt, John
2
10NeNeon20.180Period: 2Melting Point: -249Boling Point: -246 Vanderwaals Radius: 160Ionization Energy: 21,5645Discovery Year: 1898Inventor: Ramsay, Sir William & Strutt, John
28
18ArArgon39.948Period: 3Melting Point: -189Boling Point: -186 Vanderwaals Radius: 191Ionization Energy: 15,7596Discovery Year: 1894Inventor: Ramsay, Sir William & Strutt, John
288
36KrKrypton83.798Period: 4Melting Point: -157Boling Point: -153 Vanderwaals Radius: 198Ionization Energy: 13,9996Electrone Gativity: 2,96Covalenz Radius: 189Discovery Year: 1898Inventor: Ramsay, Sir William & Strutt, John
28188
54XeXenon131.29Period: 5Melting Point: -112Boling Point: -108 Vanderwaals Radius: 216Ionization Energy: 12,1298Electrone Gativity: 2,1Covalenz Radius: 209Discovery Year: 1898Inventor: Ramsay, Sir William & Strutt, John
2818188
86RnRadon(222)Period: 6Melting Point: -71Boling Point: -62 Ionization Energy: 10,7485Electrone Gativity: 2Discovery Year: 1900Inventor: Ramsay, Sir William & Strutt, John
281832188
118OgOganesson(294)Period: 7Discovery Year: 1999
28183232188

Heat change





Note

Melting point
Boiling point