'Carl scheele' diaporamas de présentation

Hydrogen

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S Elements

S Elements . Groups 1 and 2. Properties of Group 1A. These are (except for hydrogen) soft, shiny, low-melting, highly reactive metals, which tarnish when exposed to air. The valence electron is easily lost, forming an ion with a 1+ charge. larger atomic radii and low ionization energies

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Oxygen

Oxygen. Oxygen is an element that is in the air and water all around us. It is also the gas that we breath. Joseph Priestly and Carl Whelm Scheele both discovered oxygen but it was Priestly Who was mostly given the credit for the discovery. They were able to produce oxygen by

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