Mass number refers to a particular isotope of 82Pb.
Lead is a metal element. Atomic Mass number of it is 207.
... that each atom of lead contains 82 protons in its nucleus.
The atomic number for the Element Lead is 82.
Pb (plumbum) is the chemical symbol for the soft heavy metal, lead.
125 neutrons :)
Lead is a metal element. Atomic Mass number of it is 207.
... that each atom of lead contains 82 protons in its nucleus.
Atomic number 82 is Lead (Pb).
The atomic number for the Element Lead is 82.
82. Lead is an element with symbol Pb and atomic number 82. The atomic number relates to the amount of electrons of the element
Element 82 is lead with the symbol Pb (from the Latin "plumbum.")
An isotope of Lead, Pb.
atomic mass equal to number of protons and neutrons. If Pb has a mass of 207 and an atomic number of 82, that means that there are 82 protons in Pb, which also means there should be 82 electrons. That leaves neutrons, which would be 207-82=125 neutrons.
Mass number is found by adding the number of protons plus the number of neutrons. Electrons are not added because they are so minute that their masses have almost no bearing on the total mass of the atom. In this case, the mass number would be about 214.
Lead (Pb) has the atomic number 82 with an Atomic Mass of 207.2 amu.
Pb
The element with 86 electrons, 125 neutrons, and 82 protons is the element Lead (Pb). The number of protons (atomic number) determines the element, and in this case, it is 82 for lead. The sum of protons and neutrons gives the atomic mass, which is 207 in this case, making it the isotope with mass number 207.