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Element 112 was first synthesised in 1996 and officially named in 2009 as copernicium, Cn - HSC - SSCE Chemistry - Question 23 - 2011 - Paper 1
Question 23
Element 112 was first synthesised in 1996 and officially named in 2009 as copernicium, Cn. Explain why the transuranic isotope $_{112}^{278}Cn$ is unstable. Descri... show full transcript
Worked Solution & Example Answer:Element 112 was first synthesised in 1996 and officially named in 2009 as copernicium, Cn - HSC - SSCE Chemistry - Question 23 - 2011 - Paper 1
Step 1
Explain why the transuranic isotope $_{112}^{278}Cn$ is unstable.
Answer
The transuranic isotope is unstable primarily due to its large atomic number and mass. Such isotopes tend to have an excessive number of protons compared to neutrons, which leads to an imbalance in the nuclear forces that bind the nucleus together. This instability results in the decay of the isotope through various forms of radioactive decay, such as alpha decay.
Step 2
Describe a method by which transuranic elements can be synthesised.
Answer
One common method for synthesising transuranic elements is through the process of nuclear fusion. This method involves bombarding lighter elements, such as isotopes of californium or plutonium, with neutrons or other light nuclei to create heavier nuclei. By carefully controlling the conditions of the reaction, such as the energy of the particles and the target materials, scientists can produce new transuranic elements.