Which of the Following Elements Is an Alkali Metal

question 21

Multiple Choice

Which of the following elements is an alkali metal?

• A)argon (Ar)
• B)lead (Pb)
• C)cerium (Cr)
• D)indium (In)
• E)lithium (Li)

---

Definitions:

AVC

Average Variable Cost, which is the total variable costs of production divided by the quantity of output produced.

Marginal Cost

The increase in total cost that arises from producing an additional unit of a good or service.

Average Variable Cost

The total variable costs (costs that change with the level of output) divided by the quantity of output produced.

Average Fixed Cost

The total fixed costs of production divided by the quantity of output produced, illustrating how fixed costs per unit change with output levels.