Which represents the balanced nuclear equation for the beta minus decay of Co-60?

₂₇⁶⁰Co ⇒ ₂₈⁶⁰Ni + ₋₁⁰e

Given

the beta minus decay of Co-60

Required

The reaction

Solution

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

Beta minus : ₋₁e⁰ particles

so the reaction :

Co-60 ⇒ X + beta minus

₂₇⁶⁰Co ⇒ X + ₋₁⁰e

In a nuclear decay reaction, the mass number and atomic number of the left (reactant / decayed) and right (product) sides will be the same

mass number = constant = 60

atomic number = 27 - (- 1) = 28

So the element X = ₂₈⁶⁰Ni

₂₇⁶⁰Co ⇒ ₂₈⁶⁰Ni + ₋₁⁰e

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.