178.49, just look at the period table.
The atomic number of hafnium (Hf) is 72.The atomic weight of Hf is 178.49 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
The atomic number of hafnium is 72. So there is 72 protons.
Position of hafnium in the periodic table: group 4, period 6, atomic number 72.
Hafnium (Hf) is a natural chemical element.
Hafnium is a natural chemical element, rare, solid transition metal, atomic number 72, group 4 and period 6 in the table of elements.
* Number of Electrons: 72 * Number of Neutrons:106 * Number of Protons: 72 * Number of Electrons: 72 * Number of Neutrons: 106 * Number of Protons: 72
Hafnium has 72 electrons and protons; the number of neutrons is different for each isotope and depend on atomic mass of the isotope.
an element of period 6 name has hafnium having atomic no 72 and atomic mass as 178.49
The atomic number of hafnium (Hf) is 72.The atomic weight of Hf is 178.49 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
The superscript is the atomic mass number, which is the sum of protons and neutrons. The subscript is the atomic number, which is the number of protons. For a hafnium nuclide with 107 neutrons, the superscript would be 180 (107 neutrons + 73 protons) and the subscript would be 73.
the answer is 109... im not positive that im right but if i am right heres what you do... subtract the atomic mass from the atomic number(number of protons.) :p
the atomic number of hafnium is 72, protons? 72, neutrons? 106, electrons? 72
Hafnium (Hf) Atomic # 72 Atomic Mass 178.5 Protons 72 Electrons 72 Neutrons 106 Melting Point 2230 C Boiling Point 4600 C Normal Phase It's A Solid Metal And Belongs Into The Transition Metals.
The atomic number of hafnium is 72. So there is 72 protons.
Position of hafnium in the periodic table: group 4, period 6, atomic number 72.
Hafnium is the element that has a mass number of 179. Its color is silver, its structure is hexagonal, while the number of neutrons is 106.
Hafnium (Hf) is a natural chemical element.