If Someone Tells You They Have a Sample of Niobium-90,can

question 76

Multiple Choice

If someone tells you they have a sample of niobium-90,can you tell how many neutrons are in the nucleus?

• A)Yes,there are 41 neutrons.
• B)Yes,there are 90 neutrons.
• C)Yes,there are 49 neutrons.
• D)No,more information must be given.
• E)No,there is no such thing as "niobium."

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Definitions:

Saturated Zone

The area in the subsurface where water fills nearly all the pore spaces.

Unsaturated Zone

A part of the subsurface where most of the pore spaces are filled with air rather than water.

Groundwater

Water that collects or flows beneath the Earth's surface, filling the porous spaces in soil, sediment, and rocks, and often providing a vital source of water for drinking and irrigation.

Glaciers

Large masses of ice, formed by compacted snow, that move over land under their own weight, significantly shaping the landscape.