The Atomic Radius of Aluminum Is 143 Pm

question 128

Multiple Choice

The atomic radius of aluminum is 143 pm .Estimate its density,Given that the metal has a close-packed structure.

• A) 3.87 g.cm - 3
• B) 5.54 g.cm - 3
• C) 7.92 g.cm - 3
• D) 16.3 g.cm - 3
• E) 2.71 g.cm - 3

---

Definitions:

Fixed Cost

Expenses that do not change with the level of production or business activity, such as rent, salaries, and insurance premiums.

Opportunity Rate

The return a company foregoes by investing capital in one project over a potentially more profitable alternative.

Lockbox System

A service provided by banks to companies for the receipt of payment from customers, involving the direct sending of payments to a location accessible by the bank, which then deposits the funds into the company's account.

Present Value

Present value is the current worth of a future sum of money or stream of cash flows, given a specified rate of return.