There are 67 protons in holmium. The atomic number of an element is the same as the number of protons.
there are six protrons
Zinc has 30 protrons, 36 neutrons, and 66 electrons
99
there are 12
57
82 protons
8
there are 11 neutrons.
it has 8 protons
it has 40
Holmium's abreviation is Ho
Holmium is a rare earth metal.