Everything we can see and touch, and quite a lot that we can’t as well, ... A particle diagram can represent a solid element, a liquid element or a gaseous element. 1.

Everything we can see and touch, and quite a lot that we ... must be the same colour and size. A particle diagram can represent a solid element, a liquid element or a gaseous element.

Bromine is always a liquid, while iodine can be a liquid or solid when at room temperature, depending on several factors. All seven are nonmetallic. Other elements can bond with diatomic elements ...

Diatomic elements hate to be alone — so much so that they just aren't found as single atoms. Instead, they're always two atoms of the same pure element bonded together. It's right in the name: Di- ...