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Many elements have non-integral atomic masses because

a)

They have isotopes

b)

Their isotopes have non-integral masses

c)

Their isotopes have different masses

d)

The constituents neutrons, protons, and electrons combine to given fractional masses



Question ID - 102065 | SaraNextGen Top Answer

Many elements have non-integral atomic masses because

a)

They have isotopes

b)

Their isotopes have non-integral masses

c)

Their isotopes have different masses

d)

The constituents neutrons, protons, and electrons combine to given fractional masses

1 Answer
127 votes
Answer Key / Explanation : (a,c) -

(a,c)

Most of the elements are found in nature as a mixture of isotopes which have different atomic masses. Therefore, the atomic mass of any element is the average of the atomic masses of isotopes of that element

Example:

Given that the abundance of isotopes  and  is 5%, 90% and 5% respectively, the atomic mass of  is calculated as follows:

Atomic mass of iron =

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