The Key Problem Underlying the Discovery of Radium Was

question 20

Multiple Choice

The key problem underlying the discovery of radium was:

• A) Why certain isotopes of thorium are radioactive.
• B) Why uranium has the power to darken photographic plates.
• C) Why pitchblende emits rays that are stronger than rays emitted by pure uranium.
• D) Why rays emitted by thorium are stronger than rays emitted by uranium.
• E) Why X-rays are stronger than rays emitted by pure uranium.

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Definitions:

Inherited Condition

A health condition or disease that is passed from parents to offspring through genes, also known as a genetic condition.

Sex Chromosomes

Chromosomes that determine the biological sex of an individual, with the most common configurations being XX for females and XY for males.

Intersex Condition

A condition present at birth where an individual has reproductive or sexual anatomy that doesn’t fit the typical definitions of female or male.

Primary Sex Characteristics

The physical structures directly involved in reproduction, such as ovaries in females and testes in males.