Question

the atomic number of the element lead indicates that each atom of lead has?

Answer 1

The atomic number is the sum number of protons + number of neutrons

Answer 2

that's what I don't know :c
help me please!!! D;

Answer 3

is it 207?

Answer 4

The number of protons is the same number of electrons, thereby making the atom relatively neutral. Atoms with a different number of neutrons are called isotopes and may be lighter or heavier than the neural version.

Answer 5

http://www.ptable.com/Images/periodic%20table.png

Here is a table of elements, Lead has the symbol Pb, with atomic number 82

Answer 6

No, atomic number is the number of protons. For any given element, all of the atoms have the same atomic number, but may have different numbers of neutrons (including none).

Answer 7

The mass number is the number of protons + neutrons. That may vary (by having different numbers of neutrons) between atoms of a given element; different isotopes have different mass numbers. For example, uranium (U) has 92 protons, and an atomic number of 92. Different isotopes of uranium contain differing numbers of neutrons, and so some of the isotopes of uranium include U-233, U-235, U-238, and so on. All have 92 protons, but the neutron count is somewhere around 146 (for the most common isotope, U-238).

The atomic weight shown in the periodic table is usually not a nice round number because most elements have more than one isotope. The atomic weight is a weighted average of the mass numbers of the various isotopes.