answersLogoWhite

0

Atomic number is the number of protons in the nucleus of an atom.

The mass number however is the sum of the protons and neutrons in the nucleus of an atom.

Each element has one specific atomic number (= no. of protons), but can have more different number of neutrons, hence it might have different mass numbers, those atoms are called 'isotopes' of an element.

Examples are given below

Calcium:

Ca(40) has 20 protons and 20 neutrons (mass no. 40)

Ca(41) has 20 protons and 21 neutrons (mass no. 41)

Kalium:

K(40) has 19 protons and 21 neutrons (mass no. 40)

K(41) has 19 protons and 22 neutrons (mass no. 41)

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

Subtracting the Atomic number from the atomic mass?

To find the number of neutrons in an atom, you would subtract the atomic number (number of protons) from the atomic mass (sum of protons and neutrons). The difference between the atomic mass and the atomic number gives you the number of neutrons in the atom.


What means mass number plus atomic number?

There is no known function for the mass number and atomic number. However, the difference between these two values gives the number of neutrons present in that atom.


How many neutrons does the atom boron have?

The atom boron has 5 neutrons. Its atomic number is 5, which means it has 5 protons in its nucleus, and since the atomic mass of boron is around 11, the difference between the atomic mass and the atomic number gives us the number of neutrons.


What is the difference between mass and atomic numbers?

The atomic number gives you a hint of how many protons are in the atom. While mass is the weight of the whole atom( including protons, electrons, and neutrons).


What gives you the atomic number?

The total of number of protons in the nucleas gives you the atomic number.


Mass number - atomic number?

The mass number represents the total number of protons and neutrons in the nucleus of an atom. The atomic number specifies the number of protons in the nucleus. The difference between the mass number and atomic number gives the number of neutrons in the nucleus.


The atomic number gives the number of what in an atomic nucleus?

Atomic Number It is thre position of the atom in the periodic table. It is the number of protons in the neucleud. It is the number of electrons in the neutally charged atoms. Atomic MASS it the total of the protons and neutrons in the atom.


What do you get if you subtract the atomic number from the mass number for a particular atom?

You get the number of neutrons in the atom. The mass number represents the total number of protons and neutrons in the nucleus, while the atomic number represents the number of protons. Subtracting the atomic number from the mass number gives you the number of neutrons because the difference accounts for the protons.


When you subtract the atomic number from the atomic mass of any element you get what?

Atomic mass= Atomic no. + no. of neutrons So when the atomic no. is subtracted from the atomic mass, the result would be equal to the number of neutrons present in the nucleus of the atom of the element.


The number of protons contained in each element gives that element what number?

The number of protons in the nucleus of an element gives that element its ATOMIC NUMBER.


That particle that gives an element its atomic number is in this part?

The atomic number is determined by the number of protons, which are located in the nucleus.


What is the atomic number of f plus the atomic number of Na equals the atomic number of this element?

The atomic number of F (fluorine) is 9 and the atomic number of Na (sodium) is 11. Adding them together gives 20, which is the atomic number of calcium (Ca).