Complete the following decays: (a)^27 Si →(27)/(Al)+ (b)^74 As → ^74 Se+ (c)^228 U →α+ (d)^93 Mo

step 1 So in this question, we are asked to complete a few decay reactions. So the first reaction that'

Complete the following decays: (a)^27 Si →(27)/(Al)+ (b)^74...

Complete the following decays: $(a)^{27} \mathrm{Si} \rightarrow \frac{27}{\mathrm{Al}}+$ $(b)^{74} \mathrm{As} \rightarrow{ }^{74} \mathrm{Se}+$ $(c)^{228} \mathrm{U} \rightarrow \alpha+$ $(d)^{93} \mathrm{Mo}+\mathrm{e}^{-} \rightarrow$ $(e)^{131} \mathrm{I} \rightarrow{ }^{131} \mathrm{Xe}+$

Complete the following decays:
$(a)^{27} \mathrm{Si} \rightarrow \frac{27}{\mathrm{Al}}+$
$(b)^{74} \mathrm{As} \rightarrow{ }^{74} \mathrm{Se}+$
$(c)^{228} \mathrm{U} \rightarrow \alpha+$
$(d)^{93} \mathrm{Mo}+\mathrm{e}^{-} \rightarrow$
$(e)^{131} \mathrm{I} \rightarrow{ }^{131} \mathrm{Xe}+$

Key Concepts

Alpha Decay

Alpha decay is a radioactive decay process in which an unstable nucleus emits an alpha particle, consisting of two protons and two neutrons. This emission decreases the mass number of the nucleus by 4 and the atomic number by 2, producing a new element that is typically lighter. It is commonly observed in heavy nuclei where the emission of a tightly bound helium nucleus helps stabilize the atom.

Beta Minus Decay

Beta minus decay occurs when a neutron in an unstable nucleus is transformed into a proton, emitting an electron (known as a beta particle) and an antineutrino. This process increases the atomic number by 1 while leaving the mass number unchanged, leading to the transmutation of the element into its neighbor on the periodic table.

Beta Plus Decay (Positron Emission)

Beta plus decay, or positron emission, involves the conversion of a proton in the nucleus into a neutron, accompanied by the emission of a positron and a neutrino. In this process, the atomic number decreases by 1 while the mass number remains constant. It usually occurs in proton-rich nuclei as a way to move towards a more stable configuration.

Electron Capture

Electron capture is a nuclear decay mechanism where an inner orbital electron is captured by the nucleus, combining with a proton to form a neutron and releasing a neutrino. This process also results in a decrease of the atomic number by 1 while keeping the mass number the same, and serves as an alternative pathway to beta plus decay for proton-rich nuclei.

Conservation Laws in Nuclear Reactions

In all nuclear decay processes, conservation laws play a critical role. Key among these is the conservation of mass number (total number of nucleons) and conservation of atomic number (total charge). These principles ensure that, despite the transformation of particles within the nucleus, the overall count of nucleons and the net charge are maintained in the resultant decay products.

Transcript

Please give Ace some feedback