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mass
'no magic to the mole'
amount
molar mass
concentration
solution volume
gas volume
molar gas volume
Avogadro
constant, L
number of
entities, N
Now try the following question.
B3. ISOTOPES & RELATIVE ISOTOPIC MASSES - 2
3.2 EXAMPLES OF THE 21 MONO-NUCLIDIC ELEMENTS
Only 21 elements are MONO-NUCLIDIC,
being low-Z examples. Naturally occurring samples of mono-nuclidic elements consist of a single nuclide only that is, therefore, 100 % abundant.
ASIDE
The terms mono-nuclidic and mono-isotopic are distinct. Mono-nuclidic elements are classed as those with only one significant naturally abundant nuclide. On the other hand, the 26 mono-isotopic elements possess only a single stable nuclide.
There is some overlap between these categories: 19 elements are both mono-nuclidic and mono-isotopic. However, seven mono-isotopic nuclides are not mono-nuclidic, and three mono-nuclidic elements are not mono-isotopic.
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