Which of the following is not stable?Group of answer choicesBa56 +Al133+S162-I53 -
Question
Which of the following is not stable?Group of answer choicesBa56 +Al133+S162-I53 -
Solution
The question is asking which of the following isotopes is not stable.
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Ba56: This is an isotope of Barium. The most common isotope of Barium is Ba138. So, Ba56 is not a stable isotope.
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Al133: This is an isotope of Aluminum. The most common isotope of Aluminum is Al27. So, Al133 is not a stable isotope.
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S162: This is an isotope of Sulfur. The most common isotope of Sulfur is S32. So, S162 is not a stable isotope.
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I53: This is an isotope of Iodine. The most common isotope of Iodine is I127. However, I53 is not an isotope of Iodine. The number 53 is the atomic number of Iodine, not the number of neutrons.
So, all of the given isotopes are not stable.
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