The following incomplete nuclear reaction represents the principal decay mode of…

PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation

Problem

The following incomplete nuclear reaction represents the principal decay mode of strontium-90:

^{90}_{38}\text{Sr} \;\longrightarrow\; {}^{\;90}_{\;?}\text{Y} \;+\; ? \;+\; ?

(a) Fill in every missing symbol (mass number, atomic number, and particle symbols) so that the equation is complete. (b) Show in your completed equation that nucleon number, charge number, and lepton number are individually conserved. (c) Calculate the number of neutrons present in the daughter nucleus and compare it with that in the parent nucleus.

Related theory

Radioactivity
Nuclear physics
Atomic Structure
Nuclei

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