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Which of the following represent an alpha decay?

Which of the following represent an alpha decay?-example-1
User Vanza
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Answer:

D

Explanation:

From each of the options, they're all radioactive decays and radioactive particles were emitted.

Option A is

²¹²₈₃Bi → ²¹²₈₄Po + ⁰₋₁e

This decay emitted an electron and it is also known as a beta (β) particle

Option B

²³⁹₉₃Np → ²³⁹₉₄Pu + β

This is also a beta β-particle decay and its similar to option A

Option c

⁶⁰₂₈Ni → ⁶⁰₂₈Ni + γ

This type of decay releases a particle called gamma particle hence the radioactive material undergo a gamma decay. Gamma emissions are characterized by zero charge and no change in the atomic number of the sample.

Option D

²³⁵₉₃Np → ²³¹₉₁Pa + α

This sample undergo an alpha particle decay and alpha particles are know to have a mass of helium atom (⁴₂He)

²³⁵₉₃Np decayed to become ²³¹₉₁Pa with a deficit of ⁴₂X and its known as a helium particle

User Lu Mike
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