What is the name given to many of the elements that have more that one oxidation number??

So in level 1: 2 electrons level 2: 8 level 3: 18 level 4: 32 ? an element with an atomic number of 59 how many ...

How many muscles does it take to smile 17,31,57?

My father is a biology professor and researcher, so he would know, but he is most likely sleeping at the moment. I need the i...

does anyone know the element phase at room temp for phosphorus

I'm not trying to get answers I just want to know which one it is so Is it FeO2 or FeO3.

How many people have a non-standard number of balls?

I know it's not known who discovered iron, because I've seen many sites that say that, but I have a project for school and I'...

How many standard time zones are there in the world ?

How many atoms is an average person made up of. I know that the Universe contains about 10^80 atoms. Does anyone know how m...

how many faces does a rectangular prism have? And how many vertices