What is the atomic mass of an isotope?

What is the atomic mass of an isotope?

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.

What are 2 examples of atomic mass?

Atomic Mass Examples

• The atomic mass of most boron atoms is about 11 amu, because of their 5 protons and 6 neutrons.
• The atomic mass of most sodium atoms is about 23 amu, because of their 11 protons and 12 neutrons.
• The atomic mass of most copper atoms is about 63 amu, because of their 29 protons and 34 neutrons.

How are isotopes used to calculate atomic mass?

The versions of an element with different neutrons have different masses and are called isotopes. The average atomic mass for an element is calculated by summing the masses of the element’s isotopes, each multiplied by its natural abundance on Earth.

What is an isotope give 2 examples?

Isotope Examples Carbon 12 and Carbon 14 are both isotopes of carbon, one with 6 neutrons and one with 8 neutrons (both with 6 protons). Carbon-12 is a stable isotope, while carbon-14 is a radioactive isotope (radioisotope). Uranium-235 and uranium-238 occur naturally in the Earth’s crust. Both have long half-lives.

What is the atomic mass of CL 37?

36.965903
Reference E95

How do you find the atomic mass example?

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.

What is meant by atomic mass with example?

The unit of atomic mass is defined as a mass equal to one-twelfth of the mass of carbon-12 atoms. In relation to the carbon-12 norm, the mass of an isotope of any element is expressed. One atom of helium-4, for example, has a mass of 4.0026 amu. A sulphur-32 atom has a mass of 31.972 amu.

What is the atomic mass of chlorine 35?

34.968852
Reference E95