Which of These Statements About an Atom Is Incorrect

question 13

Multiple Choice

Which of these statements about an atom is incorrect ?

• A) The number of protons equals the number of electrons.
• B) The number of protons equals the atomic number.
• C) The number of protons always equals the number of neutrons.
• D) The mass number is the sum of protons and neutrons in the atom.
• E) The mass number minus the atomic number equals the number of neutrons in the atom.

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Definitions:

Profit Margin

The amount by which revenue from sales exceeds costs in a business, expressed as a percentage of total sales.

Return on Investment

A performance measure used to evaluate the efficiency or profitability of an investment, calculated by dividing the net profit by the initial cost of the investment.

Increase in Income

An upward movement in earnings or revenue, signaling growth or improvement in financial performance.

Variable Cost

A cost that changes in proportion with the level of output or activity; in contrast to fixed costs, which remain constant regardless of activity.