Which Group 6A Element Is Naturally Radioactive

question 155

Multiple Choice

Which group 6A element is naturally radioactive?

• A)S
• B)U
• C)Dy
• D)Po

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Definitions:

Sudden Infant Death Syndrome

A mysterious and tragic condition whereby an apparently healthy infant dies unexpectedly, typically during sleep, and without a clear cause.

Crib Death

Also known as Sudden Infant Death Syndrome (SIDS), it is the unexplained death of a healthy infant, usually during sleep.

Receptors of Light

Specialized cells in the eyes, such as rods and cones, that respond to light and enable vision.

Cones

Photoreceptor cells in the retina of the eye that are responsible for color vision and function best in relatively bright light.