The mass number is the sum of protons + neutrons.
The mass number of an element is the total number of protons plus neutrons
The number of atoms it has. NO, the Mass number refers to it's atomic weight. It is the sum of protons, and neutrons in the atom.
Tells you the toal number of Protons AND Neutrons of an 'element' (better: 'isotope of an element')
Protons and Neutrons comprising the atom's nucleus.
protons and neutrons
The mass number of an atom is the sum of the numbers of protons and neutrons in the nucleus of the atom. It also indicates the total positive charge on the nucleus.
You think probable to an isotope.
barium
Protons are always in the nucleus of an atom. The number of protons indicates the element, its position in the periodic table. Protons a deemed to have a charge of (+) Protons are deemed to have a relative mass of '1' . The total number of protons and neutrons in the nucleus of an atom is the Atomic Mass. Collectively they are named as 'Nucleons'.
The atomic number indicates the number of protons in an atom of a particular element. The atomic number must be an integer (counting number), and is unique to that specific element.
The mass number of an atom is the sum of the numbers of protons and neutrons in the nucleus of the atom. It also indicates the total positive charge on the nucleus.
You think probable to an isotope.
By the sum of protons and neutrons we obtain the mass number of the atom which is written at the top of the atom periodic number. We can also obtain the mass number by adding the atomic number and the number of neutrons because the atomic number and the number of protons are same. You know that scientists have discovered some particles which are smaller than protons and neutrons and these are known as quartz.
barium
The mass number of an isotope indicates the total number (the sum) of protons and netrons in an atom.The number of protons is determined by the atomic number.The number of neutrons can be found by subtracting the atomic number from the mass number.
It indicates the atomic number of that element.
the mass number is number of protons in an atom, plus the number of neutrons.
You can't change the mass number of an atom because the mass number is the number of protons which is the atom's atomic number I hope this helped :)
The number of neutrons in an atom can affect the atomic mass of an atom.
Atomic number is the number of protons in the atom; atom mass is the total mass of the atom (usually neglecting the mass of the electrons because they have so little).
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
Protons are always in the nucleus of an atom. The number of protons indicates the element, its position in the periodic table. Protons a deemed to have a charge of (+) Protons are deemed to have a relative mass of '1' . The total number of protons and neutrons in the nucleus of an atom is the Atomic Mass. Collectively they are named as 'Nucleons'.