No alchemic symbol for radon; radon was discovered around 1900.
The irritant symbol can be found on products such as bleach and cleaning products e.g. for the bathroom. The symbol is very common around the home.
Scientists around the world use the same element symbols. Chinese scientists would use C as the symbol for Carbon, as would any scientist.
This is the Lewis dot notation.
The arrows are going in a cirle/cycle. The arrows continue to go around. therefore, the arrows going in a circle means that they keep going around and around. Just like re-using things.
the symbol for thunderstorms is a capital T with a circle around it.
You will never ever ever find the oxidising symbol around your house.
The heart symbol has been around for years. It all started with the Egyptians.
No alchemic symbol for radon; radon was discovered around 1900.
It is the electrical symbol for an Ammeter (a device that measures current).
The red octagon around the HHPS symbol means its "Dangerous" also its a Danger sign
the symbol for patience is a star with a circle around it.
The universal symbol for health is the universal symbol for medicine. It is called the rod of Aesculapius. It is a rod with a snake curled around it.
A c with a circle around it is the 'copyright' symbol.
The copyright symbol looks like a lower case c with a circle around it. ©
around 6
An "s" with coil around it