With the help of symbol representation, identify whether the symbol is alpha particle, beta particle, gamma ray, positron, a neutron, or a proton. Concept introduction: To understand the radioactivity of heavy elements, symbol for radioactive elements isused. The main subatomic particles are proton ( 1 1 p ) , neutron 0 1 n , and electron ( − 1 0 e ) . When a nucleus emits a particle containing two proton and two neutron, such emission is known as alpha ( α ) decay and is represented by 4 2 He . When a nucleus emits an electron during a nuclear reaction, such emission is known as beta ( β ) decay and is represented by − 1 0 e . When a higher energy photon is emitted during the nuclear reaction, such emission is known as gamma ray decay.

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Chapter 17, Problem 55E

Interpretation Introduction

Interpretation:

With the help of symbol representation, identify whether the symbol is alpha particle, beta particle, gamma ray, positron, a neutron, or a proton.

Concept introduction:

To understand the radioactivity of heavy elements, symbol for radioactive elements isused.

The main subatomic particles are proton (11p), neutron 01n, and electron (−10e).

When a nucleus emits a particle containing two proton and two neutron, such emission is known as alpha (α) decay and is represented by 42He.

When a nucleus emits an electron during a nuclear reaction, such emission is known as beta (β) decay and is represented by −10e.

When a higher energy photon is emitted during the nuclear reaction, such emission is known as gamma ray decay.

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