Q.

The atomic mass of an element is

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a

the mass of the most abundant isotope of the element in a.m.u.

b

the average atomic mass of the naturally occurring isotopes of the elements in a.m.u.

c

the weight of one mole of the atoms of the most abundant isotope of the element in grams

d

the weight of one atom of the element in grams.

answer is B.

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Detailed Solution

Atomic mass is an average mass of different atoms of an element, as most elements have different isotopes. Atomic mass is usually not a whole number. It can be a fraction.

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