Find the Half-Life of the Radioactive Element Radium, Assuming That $\mathrm { k } = 4.332 \times 10 ^ { - 4 }$

question 10

Multiple Choice

Find the half-life of the radioactive element radium, assuming that its decay constant is $\mathrm { k } = 4.332 \times 10 ^ { - 4 }$ , with time measured in years.

• A) 1400 years
• B) 800 years
• C) 1600 years
• D) 2308 years

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Definitions:

Presentment

A demand for acceptance or payment of a negotiable instrument made upon the maker, acceptor, or drawee by or on behalf of the holder of the instrument.

Instrument

A legal document formally evidencing an obligation or right, such as checks, promissory notes, or securities.

Holder

A person who is in possession of a negotiable instrument that is issued or indorsed to that person’s order or to bearer.

Negotiable Instrument

A written document that is signed by the maker or drawer and that contains an unconditional promise or order to pay a certain sum of money on delivery or at a definite time to the bearer or to order.