Mass number is the sum of protons and neutrons.
it is find it ur selfs!!
Mass number..can be calculated..by the sum of No. of protons and the No. of electrons. And this would give you the the mass number of the element.
You would subtract the atomic number from the mass number.
You would subtract the atomic number from the mass number.
You have to know the element with the mass number of 75. Then you would look it up on the periodic table to find the atomic number, which is the number of protons.
Subtract it from the atomic number (protons).
atomic number and its squrare
Mass number = Number of protons + number of neutrons
The mass number of an element like calcium is the sum of the number of protons and neutrons in its nucleus. Calcium has 20 protons, so to find the mass number, you would look up the number of neutrons in the periodic table and add that to 20.
Mass number = Number of Protons + Number of Neutrons
To find the number of neutrons in an atom of a given element, you would typically subtract the atomic number (number of protons) from the atomic mass of the element. The atomic mass is usually represented as the decimal number on the periodic table for each element.
To the find the mass number of an atom you add the protons and neutrons. Meaning that the mass number of this atom is 12.