Element-120 is located in a region of the neutron versus...

Name: Problem 17, Chapter 25: General Chemistry: Principles and Modern Applications
Uploaded: 2020-07-31T02:09:45-08:00
Duration: 43 s
Channel: Bin Chen
Description: Element-120 is located in a region of the neutron versus proton map known as the island of stability. Write a nuclear equation for the generation of element- 120 by bombarding iron isotopes on a plutonium target.

Element-120 is located in a region of the neutron versus proton map known as the island of stability. Write a nuclear equation for the generation of element- 120 by bombarding iron isotopes on a plutonium target.

Key Concepts

Island of Stability

The island of stability is a theoretical region in the chart of nuclides where superheavy elements are predicted to have relatively longer half-lives due to closed nuclear shells. In this region, specific combinations of protons and neutrons confer extra stability, which is why experimental efforts aim at synthesizing nuclei like element-120 using carefully chosen reactions.

Isotopes and Nuclear Stability

Isotopes are forms of an element that contain the same number of protons but different numbers of neutrons, affecting their stability. In creating superheavy elements, choosing the right isotopes for both the projectile and target is critical because the number of neutrons influences the balance between repulsive and attractive forces within the nucleus and can help form a more stable nucleus, especially in the context of an excited compound nucleus.

Nuclear Reaction Equations

A nuclear reaction equation expresses the transformation of atomic nuclei where the total number of protons and neutrons (mass number) is conserved. This equation must balance both the atomic numbers and the mass numbers between the reactants and the products. In the synthesis of superheavy elements, the compound nucleus often forms in an excited state and de-excites by ejecting neutrons, which is reflected in the reaction equation.

Heavy Element Synthesis

Heavy element synthesis is the process of creating elements that do not occur naturally on Earth by fusing lighter nuclei in a controlled reaction. This often involves using a heavy target nucleus bombarded by a lighter projectile nucleus to form an excited compound nucleus that can then cool by emitting neutrons, producing a new superheavy element.

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