207.2
The element with an atomic mass of 207.20 is lead (Pb).
Lead's atomic mass is 207.2 Its atomic number is 82
The element with 82 protons and an atomic mass of 166 is lead, with the chemical symbol Pb.
The element you are referring to is lead (Pb). It is a very dense metal with an atomic mass of 207.2.
Cobalt (Co) has a smaller atomic mass than Lead (Pb). Cobalt's atomic mass is only 58.9332 while lead's is 207.2.
The element with an atomic mass of 207.20 is lead (Pb).
Lead's atomic mass is 207.2 Its atomic number is 82
Lead (Pb) has the atomic number 82 with an Atomic Mass of 207.2 amu.
The element with 82 protons and an atomic mass of 166 is lead, with the chemical symbol Pb.
The element you are referring to is lead (Pb). It is a very dense metal with an atomic mass of 207.2.
Cobalt (Co) has a smaller atomic mass than Lead (Pb). Cobalt's atomic mass is only 58.9332 while lead's is 207.2.
A Pb nucleus with an atomic mass of 206 contains 82 protons (from the atomic number of lead) and 124 neutrons (subtracting the atomic number from the atomic mass).
For this you need the atomic mass of Pb. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel..0015 moles Pb × (207.2 grams) = .311 grams Pb
Lead is a metal element. Atomic Mass number of it is 207.
The atomic number of lead, Pb, is 82. Its atomic mass depends on the isotope, as the number of electrons can vary. Its atomic weight (average relative mass ) on the periodic table is 207.2.
You take the atomic mass (the small number in the upper left corner of the square in the periodic table) and subtract the atomic number from it (the big bold number on the periodic table)
The atomic number for the Element Lead is 82.