Why Are Atoms at the Bottom of a Group in the Periodic

question 54

Multiple Choice

Why are atoms at the bottom of a group in the periodic table larger than atoms at the top of the group?

• A) larger atoms have more electrons and more occupied energy levels
• B) larger atoms have more protons
• C) larger atoms have more energy levels occupied by electrons
• D) larger atoms have less screening effect by inner electrons

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Definitions:

Contribution Margin

The amount remaining from sales revenue after variable expenses have been deducted, indicating how much revenue is available to cover fixed costs and generate profit.

Variable Costs

These are expenses that vary directly with the level of production or sales volume; they rise as production increases and fall as production decreases.

Contribution Margin Ratio

The percentage of sales revenue that remains after deducting variable costs, used to cover fixed costs and generate profit.

Variable Cost

Costs that change in proportion to the level of goods or services produced by a business.