Why Are the Atomic Masses Listed in the Periodic Table

question 12

Multiple Choice

Why are the atomic masses listed in the periodic table not whole numbers?

• A)Scientists have yet to make the precise measurements.
• B)That would be too much of a coincidence.
• C)The atomic masses are average atomic masses.
• D)Today's instruments are able to measure the atomic masses to many decimal places.

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Definitions:

Direct Labor

Workers or employees who are directly involved in the production of goods or services.

Percentage Markup

The increase in cost price expressed as a percentage of the cost.

Cost of Goods Sold

The direct costs attributable to the production of the goods sold by a company, including materials and labor.

Average Price

The mean amount of money paid for goods or services, calculated by dividing the total cost by the number of items bought.