When a reaction begins with 3.00 mg of iodine − 131 then the amount of iodine − 131 left after six half-life periods is to be determined. Concept Introduction: The process in which a subatomic particle and a nucleus of an atom collide with each other in order to form one or more nuclides is known as a nuclear reaction. These nuclides are different from the nuclides which are present initially. Amount of the original isotope remains after a certain interval of time is given as: mass remains = ( 1 / 2 n ) * ( originalmass ) where n is the number of half-lives.

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Chapter 20, Problem 73RQ

Interpretation Introduction

Interpretation:

When a reaction begins with 3.00 mg of iodine −131 then the amount of iodine −131 left after six half-life periods is to be determined.

Concept Introduction:

The process in which a subatomic particle and a nucleus of an atom collide with each other in order to form one or more nuclides is known as a nuclear reaction.

These nuclides are different from the nuclides which are present initially.

Amount of the original isotope remains after a certain interval of time is given as:

mass remains=(1/2n)*(originalmass)

where n is the number of half-lives.

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