The covalent radius (a measure of how large individual atoms are) shows different trends if you are moving across a period or down a group. A comparison of the relative covalent radii of atoms is ...
Chlorine is more reactive than the iodine in potassium iodide solution: When a Group 7 element reacts, it gains one electron to form a negative ion with a stable electronic configuration – a full ...
A fun, interactive periodic table that answers the important question: "Can I lick it?" Each element is color-coded based on how safe (or dangerous) it would be to lick it, with humorous tooltips ...
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