For now I can't recall, except that this ?'n HAS a Valid Answer ... Help Call.
the number above the symbol is the atomic....... of that element.
More electrons, protons, neutrons and a greater atomic weight.
All elements above the atomic number of 83 are radioactive, but two elements that are under it are also radioactive. They are technetium (atomic number 43) and promethium (atomic number 61). Radioactive elements are elements that decay until stable. =)
There are many different types of elements, all varying in the number of protons they contain. To determine the number of protons in a specific element, refer to the periodic table of elements. The atomic number (generally listed above the element's symbol, sometimes represented as 'Z') is equal to the number of protons in that atom.
if you look @ the periodic table, you will find the tiny # above the element... that is its atomic #.
the atomic number is determined by looking above top of the letter[s] on an element on the periodic table of elements
On the periodic table it is above the letter name of the element. I don't know where else you would find a an atomic mass of an element. The atomic number tells how many protons and electrons are inside. The amount of protons and electrons are always the same.
if you look @ the periodic table, you will find the tiny # above the element... that is its atomic #.
if you look @ the Periodic Table, you will find the tiny # above the element... that is its atomic #.
The atomic number is the whole number indicating the number of protons. It is usually directly above or below the element symbol.
The atomic number is the number of positive protons present in the nucleus of an atom.
The number listed above the symbol of an element on the periodic table is the element's atomic number.