How Many Electrons, Protons, and Neutrons Are in a Neutral ${ }_{36}^{84} \mathrm{Kr}$

question 100

Multiple Choice

How many electrons, protons, and neutrons are in a neutral atom of the following isotope of krypton ${ }_{36}^{84} \mathrm{Kr}$

• A) 36 electrons, 48 protons, and 36 neutrons
• B) 84 electrons, 24 protons, and 36 neutrons
• C) 36 electrons, 36 protons, and 48 neutrons
• D) 36 electrons, 36 protons, and 84 neutrons
• E) None of the above are correct

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Definitions:

Target AAR

Desired average annual return; a financial goal for the average rate of return over a specific period typically set by investors for their investment portfolio.

Profitability Index (PI)

The profitability index is a ratio that calculates the present value of future cash flows from an investment divided by the investment's initial cost, used to assess the desirability of a project.

Internal Rate Of Return (IRR)

A financial metric used to estimate the profitability of potential investments, calculated as the discount rate that makes the net present value (NPV) of all cash flows equal to zero.

Discounted Payback

This refers to the period of time it takes to recoup an investment in terms of its discounted cash flows, taking the time value of money into account.