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Which of the following is a transuranic element? (A) Caesium (B) Cerium (C) Chromium (D) Curium - HSC - SSCE Chemistry - Question 2 - 2003 - Paper 1
Question 2
Which of the following is a transuranic element? (A) Caesium (B) Cerium (C) Chromium (D) Curium
Worked Solution & Example Answer:Which of the following is a transuranic element? (A) Caesium (B) Cerium (C) Chromium (D) Curium - HSC - SSCE Chemistry - Question 2 - 2003 - Paper 1
Step 1
Identify the transuranic element
Answer
Transuranic elements are those that have an atomic number greater than that of uranium (92). Among the options:
- Caesium (Cs): Atomic number 55
- Cerium (Ce): Atomic number 58
- Chromium (Cr): Atomic number 24
- Curium (Cm): Atomic number 96
From the list, Curium (Cm) is the only element with an atomic number greater than 92, thus making it a transuranic element.