Classification

question 30

Multiple Choice

Classification. The various energy levels in an atom of magnesium (²⁴Mg) have different numbers of electrons. Use the numbers below to answer the following questions.
-The number of electrons in the third energy level

• A)1
• B)2
• C)3
• D)6
• E)8

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Definitions:

Labour Hours

The total number of hours worked by employees in a specified period, commonly used as a measure of labor input.

Cast Bronze Valves

Valves made from cast bronze material, often used in plumbing and industrial applications for controlling the flow of liquids or gases.

Labour Productivity

The measure of the efficiency of a person, machine, factory, or system in converting inputs into useful outputs.