The partial decay series of Rn- 220 undergoing α , α , β , α sequential decays is to be written. Concept Introduction: An alpha ( α ) decay occurs when an unstable nucleus emits a small part of itself that consists of 2 protons and 2 neutrons. It is represented as: alpha ( α ) particle H 2 4 e . The mass number decreases by 4 and atomic number decreases by 2 during an alpha decay. Beta ( β ) decay occurs when an unstable nucleus emits an electron. During beta decay, atomic number increases by 1.

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Chapter 17, Problem 68E

Interpretation Introduction

Interpretation: The partial decay series of Rn-220 undergoing α,α,β,α sequential decays is to be written.

Concept Introduction: An alpha (α) decay occurs when an unstable nucleus emits a small part of itself that consists of 2 protons and 2 neutrons.

It is represented as:

alpha(α)particle H24e.

The mass number decreases by 4 and atomic number decreases by 2 during an alpha decay.

Beta (β) decay occurs when an unstable nucleus emits an electron.

During beta decay, atomic number increases by 1.

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