Identify the Ion That Is Responsible for the Red Color

question 34

Multiple Choice

Identify the ion that is responsible for the red color of rubies.

• A) Cr³⁺
• B) Cr⁴⁺
• C) Cr⁵⁺
• D) Cr⁶⁺
• E) Cr⁷⁺

---

Definitions:

Discount Rate

The discount rate used in DCF method to establish the current worth of future financial flows.

Independent Projects

Investment projects that do not affect the cash flows or feasibility of other projects under consideration.

Profitability Index

A financial metric used to evaluate the potential profitability of an investment, calculated as the present value of future cash flows divided by the initial investment cost.

Discount Rate

The interest rate used to discount future cash flows to their present value, which is crucial in time value of money calculations and in assessing investment opportunities.