Z is atomic number, so from the Periodic Table, you can see that this is the element krypton, Kr. You can also see that this element is in Group 18 (VIIIA), which is the noble gases group.
There is no element whose symbol is An.
The atomic number of the element with the symbol Be (Beryllium) is 4.
A = mass number z = atomic number so this one is a Ni isotope with a mass of 64
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.
In an element box, you will typically find the element's symbol, atomic number, atomic mass, and sometimes its electron configuration.
There is no element whose symbol is An.
The atomic number of the element with the symbol Be (Beryllium) is 4.
Sodium symbol: Na Atomic number: 11
The symbol of sodium is Na and its atomic number is 11.
The number above an element's symbol in the periodic table represents its atomic number, which indicates the number of protons in the nucleus of an atom of that element. Atomic number determines the element's unique identity and its placement in the periodic table.
A = mass number z = atomic number so this one is a Ni isotope with a mass of 64
The chemical symbol for the element of Sodium is Na and its atomic number is 11.
The number of protons of an atom is equal to its atomic number, and element number 79 is gold (Au).
The chemical element with the atomic number 74 is wolfram (W).
The symbol of sodium is Na and its atomic number is 11.
The atomic number of the element with the symbol "Pt" on the periodic table is 78.
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.