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File:He-TableImage.png#of electrons 2. Melting point -272.2 C. Boiling Point -268.934 C. Normal Phase gas. Classitfication:nonmetal. My element belongs to the noble gases family
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File:Piston force imposee pl.svg175x189 (1718 Bytes) Force imposée lors d'une transition de phase - How to fix the force during a phase transition Uploaded with derivativeFX English