Which Statement Is Not Correct

question 31

Multiple Choice

Which statement is not correct?

• A) a Lewis acid is a substance that can accept a pair of electrons to form a new bond
• B) a Lewis base is a substance that can donate a pair of electrons to form a new bond
• C) Al(OH)₃ is an amphoteric substance that can form either a positive or negative ion
• D) Neutral molecules cannot act as Lewis acids
• E) Ag(NH₃)₂⁺ is a complex ion, formed from a Ag⁺ ion (Lewis acid) and two NH₃ molecules (Lewis bases)

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Definitions:

Contribution Margin

The difference between a company's sales revenue and its variable costs.

Traceable Fixed Expenses

Fixed costs that can be directly linked to a specific business segment or operation.

Net Operating Income

A company's income after all operating expenses are deducted but before interest and taxes are accounted for.

Break-Even

The juncture where overall expenses match the total income, leading to neither a profit nor a loss.