When a Substance Decays by Alpha Radiation,the Mass Number of the Nucleus

question 158

Multiple Choice

When a substance decays by alpha radiation,the mass number of the nucleus ________ and the atomic number ________.

• A)increases by 4,increases by 2
• B)reduces by 4,reduces by 2
• C)increases by 1,increases by 4
• D)reduces by 3,reduces by 1

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Definitions:

Economic Opportunity

The chance for individuals to pursue a better economic future, often measured by the ability for upward mobility and access to markets and jobs.

Demand Curve

A graph showing the relationship between the price of a good and the amount of it that consumers are willing and able to purchase at each possible price.

Marginal Revenue Curve

A graphical representation showing how much additional revenue a firm will generate by selling one more unit of a product or service.

Marginal Revenue

The extra income a business earns by selling an additional unit of a product or service.