how did it get its name
3
Krypton is an element.
Mercury.
Elemet
Atoms are in any elemet
Elemet
Compound because it has more then one element in it.
18 neutrons
It is when the molecule of a certain element only contains one atom of that elemet.
Oxygen is the most abundant element on earth. nitrogen
There are 17 protons for chlorine.
Assuming the request is for a sentence using the word "element" (since there is no English word "elemet"), here are two examples:Helium is the chemical element with atomic number 2.One big advantage to Drew's plan was that it had the element of surprise.