A Radioactive Isotope with an Atomic Number of 90 Undergoes

question 92

Multiple Choice

A radioactive isotope with an atomic number of 90 undergoes beta decay. What is the atomic number of the daughter nucleus?

• A) 89
• B) 91
• C) 92
• D) 88

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Definitions:

Promissory Note

A monetary contract where one party commits to paying a distinct sum to another party, either on call or at a set date ahead.

Compounded Semi-Annually

Refers to the process where interest is added to the principal balance of an investment, loan, or deposit twice a year, leading to interest earning on interest previously accumulated.

Initial Investment

The upfront sum of money used to start an investment or project.

Compounded Daily

An interest calculation method where interest is added to the principal sum daily so that each day's interest earnings also earn interest in the future.