Which of the following is an example of a transuranic element?
(A) C-14
(B) Co-60
(C) U-238
(D) Cm-249 - HSC - SSCE Chemistry - Question 2 - 2010 - Paper 1
Question 2
Which of the following is an example of a transuranic element?
(A) C-14
(B) Co-60
(C) U-238
(D) Cm-249
Worked Solution & Example Answer:Which of the following is an example of a transuranic element?
(A) C-14
(B) Co-60
(C) U-238
(D) Cm-249 - HSC - SSCE Chemistry - Question 2 - 2010 - Paper 1
Step 1
Identify Transuranic Elements
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Answer
Transuranic elements are those that have an atomic number greater than 92, which is the atomic number of uranium. This includes elements that are artificially made and often occur after uranium in the periodic table.
Step 2
Evaluate Each Option
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Answer
C-14: Carbon isotope, atomic number 6.
Co-60: Cobalt isotope, atomic number 27.
U-238: Uranium isotope, atomic number 92.
Cm-249: Curium isotope, atomic number 96.
Step 3
Select the Correct Answer
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Answer
The only transuranic element among the options is Cm-249, which corresponds to option (D). Thus, the correct choice is (D) Cm-249.
