Relative Atomic Mass
Relative Atomic Mass
Relative Atomic Mass: It is defined as the number of times a given atom is heavier than 1/12th of mass of 1 atom of carbon-12 (C-12) or it is the average mass of the atom as compared to 1/12th the mass of one carbon-12 atom.
The relative atomic mass, of an element is calculated from:
Chlorine :
Chlorine natuarlly exists as two isotopes, and
. The abundance of chlorine -35 is 75% and the abundance of chlorine-37 is 25%.
To calculate relative atomic mass, , of chlorine:
Which of the following are correct : (a) The relative atomic mass, of an element is calculated from the mass number of its isotopes only. (b) The relative atomic mass, of an element is calculated from the abundance of these isotopes only. (c) Relative atomic mass is the average mass of the atom as compared to 1/12th the mass of one carbon-12 atom. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) The relative atomic mass, of an element is calculated from the mass number of its isotopes only. (b) The relative atomic mass, of an element is calculated from the mass number of its isotopes and the abundance of these isotopes. (c) Relative Atomic Mass is defined as the number of times a given atom is heavier than 1/12th of mass of 1 atom of carbon-12. | |||
| Right Option : B | |||
| View Explanation | |||
Calculate the relative atomic mass of Chlorine . If it have two isotopes having atomic mass 35 and 37, The abundance of chlorine -35 is 75% and the abundance of chlorine-37 is 25%. | |||
| Right Option : A | |||
| View Explanation | |||
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