A Radioactive Element Has a Half-Life of 17 Min

question 4

Multiple Choice

A radioactive element has a half-life of 17 min. How many minutes will it take for the number of atoms present to decay to 1/8th of the initial value?

• A) 450 min
• B) 51 min
• C) 2.1 min
• D) 136 min
• E) 250 min

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Definitions:

Annual Interest Rate

The yearly rate charged by a lender to a borrower, expressed as a percentage of the principal loan amount.

Lottery Winnings

Income received from winning lotteries, which is often subject to taxation.

Semiannual Payments

Payments made twice a year as part of a financial agreement, often seen in the context of bonds or loans.

Interest Rate

The percentage of the principal amount charged by a lender to a borrower for the use of assets, usually expressed as an annual rate.