Question

How can calculate the mass of the elements​

Answer 1

Answer:

by the help of the order metre

Answer 2

To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.