im not sure ask someone else on this website
Within each element square, information on the element's symbol, atomic number, atomic mass, electronegativity, electron configuration, and valence numbers can be found. At the bottom of the periodic table is a two row block of elements that contain the lanthanoids and actinides.
Each element has a different number of protons and neutrons. So it changes for each element.
A square would need to be approximately 361.5 feet on each side to contain three acres.
The atoms of ALL elements contain at least one protons. The atomic number of each element is a count of how many protons atoms of that element contain. Thus, in answer to your question, there are NO metals that do not contain a proton.
Each square includes symbol of the element. It also contains atomic number.
its atomic number
The number of neutrons differ for each isotope of a chemical element.
Thyroid hormones contain the element: IODINE
Atomic Mass
In each square, symbol and atomic number is mentioned. It describes which element is present.
Each column will generally have the symbol of the element (sometimes name of the element also), the atomic number, the mass number, the state in which the element is present at room temperature. Some periodic table will also have the electronic configuration or electronegativity.
alnico is its own element