The Symbol for a Certain Isotope of Polonium Is ${ } _ { 84 } ^ { 214 }$

question 19

Multiple Choice

The symbol for a certain isotope of polonium is ${ } _ { 84 } ^ { 214 }$ Po. How many neutrons are there in the nucleus of this isotope?

• A) 314
• B) 214
• C) 84
• D) 298
• E) 130

---

Definitions:

Output

The total amount of goods or services produced by a firm or country.

Marginal External Cost

The cost of producing one additional unit of a good or service that is borne by someone other than the producer or consumer, such as environmental pollution.

Marginal Social Cost

The total cost to society of producing one additional unit of a good, including both private costs and externalities.

Equilibrium Price

The price at which the quantity of a product offered for sale equals the quantity of that product in demand.