This chemical element is gold (Au).
It is gold metal. It contains 79 protons in a single atom.
The largest transition metal is copernicium with 112 protons.
Yttrium does.
A metal can have different numbers of protons, as the number of protons dictate which element it is (refer to a periodic table). For example, Lithium (Li) is a metal, with 3 protons, whilst Gold (Au) is also a metal with 79 protons. The number of protons the metal has depends on which metal(/element) it is.
I think it's Zinc
Transition metal
Gold atoms have an estimate of 79 protons. Gold atoms have six energy levels and within the fourth energy level is where the most protons are included with 32 protons. There also 118 number of neutrons in the gold atom as well.
Gold in in the transition metal area of the periodic table, or in the Earth if that's what you were asking.
An atom's atomic number gives its number of protons in its nucleus. Checking the periodic table, we see that gold's atomic number is 79. Thus, gold is the element with 79 protons.
The number 79 means that there are 79 protons in the nucleus of an atom of gold. It is the number of protons/electrons in that atom (I say protons/electrons because there are an equal amount of both; i.e. 79 protons 79 electrons)
You are talking about Iridium. Iridium is a very hard, brittle, silvery/white (transition) metal part of the Platinum family, in fact it is the second densest element after Osmium. This should answer the Question.