Concept explainers
Interpretation:
The isotope from the given isotopes which can be found in nature must be identified by their names.
Concept introduction:
Naturally occurring isotopes are stable unlike manmadeisotopes. For example, Uranium. Isotopes having n/p ratio lesser than 1.54 are generally stable and can be found in nature.
Answer to Problem 12E
Arsenic 33As75 can be found in nature.
Explanation of Solution
Europium (63Eu162) has very high n/p ratio and so it is very unstable and can’t be found in nature.
Barium (56Ba112) has very low n/p ratio and can’t be found in nature.
Radium (88Ra260) has very high n/p ratio and can’t be found in nature.
Among all the given isotopes only Arsenic 33As75 can be found in nature.
Thus, arsenic 33As75 can be found in nature.
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