Atomic mass of an element is not a whole number because:
it contains electrons, protons and neutrons
it contains isotopes
it contains allotropes
all of the above

Question

Atomic mass of an element is not a whole number because-it contains electrons- protons and neutronsit contains isotopesit contains allotropesall of the above

Toppr Admin · Accepted Answer

Atomic mass of an element is not a whole number because It contains isotopes.
For example, chlorine has two isotopes $_{17}^{35} C l$ and $_{17}^{37} C l$ with natural abundances in the approximate ratio of 3:1. Hence, the average atomic mass of chlorine is approximately 35.5 g/mol.

Atomic mass of an element is not a whole number because:it contains electrons, protons and neutronsit contains isotopesit contains allotropesall of the above

Atomic mass of an element is not a whole number because It contains isotopes.For example, chlorine has two isotopes 3517Cl and 3717Cl with natural abundances in the approximate ratio of 3:1. Hence, the average atomic mass of chlorine is approximately 35.5 g/mol.

Atomic mass of an element is not a whole number because:
it contains electrons, protons and neutrons
it contains isotopes
it contains allotropes
all of the above

Atomic mass of an element is not a whole number because It contains isotopes.
For example, chlorine has two isotopes $_{17}^{35} C l$ and $_{17}^{37} C l$ with natural abundances in the approximate ratio of 3:1. Hence, the average atomic mass of chlorine is approximately 35.5 g/mol.