If the Nucleus of an Atom Has a Radius of About

question 97

Multiple Choice

If the nucleus of an atom has a radius of about 5 fm and a mass of about 2 $\times$ 10^-21 g,what is its approximate density? (Volume of a sphere = 4 $\pi$ r³/3)

• A)4 \(\times\) 10¹⁵ g/cm³
• B)4 \(\times\) 10¹² g/cm³
• C)4 \(\times\) 10⁹ g/cm³
• D)4 \(\times\) 10⁶ g/cm³
• E)4 \(\times\) 10³ g/cm³

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Definitions:

Pollen Grains

Microscopic structures produced by the male parts of plants, responsible for carrying male gametes to the female part for fertilization.

Progymnosperms

An extinct group of plants that are considered to be the ancestors of both gymnosperms and angiosperms, showing features typical of both groups.

Megaphylls

Leaves with a highly branched vascular system, characteristic of most modern plants, contrasted with microphylls of some ancient lineages.

Woody Tissue

Plant tissue composed mainly of xylem, providing structural support and conduction of water and nutrients; commonly found in trees and shrubs.