Fission of nuclei is possible because thebinding energy per nucleon in them [2005]a)increases with mass number at low massnumbers.b)decreases with mass number at low massnumbers.c)increases with mass number at high massnumbers.d)decreases with mass number at high massnumbersCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

The binding energy per nucleon for the middle nuclides (from A = 20 to A = 56) is maximum. Hence, these are more stable. As the mass number increases, the binding energy per nucleon gradually decreases and ultimately binding energy per nucleon of heavy nuclides (such as uranium etc.) is comparatively low. Hence, these nuclides are relatively unstable. So, they can be fissioned easily.

Answer

A is also correct

Answer

Binding energy per nucleon increases with increasing atomic no. and then decreases

Answer

A

Answer

Binding Energy per Nucleon and Mass Number
The binding energy per nucleon is the amount of energy required to remove a nucleon from the nucleus of an atom. This energy is crucial in determining whether a nucleus can undergo fission.

Decreases with Mass Number at High Mass Numbers
As the mass number of a nucleus increases, the binding energy per nucleon decreases at high mass numbers. This means that larger nuclei have less stability per nucleon compared to smaller nuclei.

Fission of Nuclei
In fission reactions, a heavy nucleus splits into two lighter nuclei, releasing a large amount of energy. This process is possible because the resulting nuclei are more stable due to their higher binding energy per nucleon.
Therefore, fission of nuclei is possible because the binding energy per nucleon decreases with mass number at high mass numbers, making the resulting nuclei more stable.

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