The Numbers of Geometrical Isomers and Optical Isomers of the Complex

question 12

Multiple Choice

The numbers of geometrical isomers and optical isomers of the complex ion [Co(en) ₃]³⁺ are, respectively,

• A)2 and 2.
• B)1 and 1.
• C)3 and 2.
• D)1 and 2.
• E)2 and 4.

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Definitions:

Direct Materials Quantity Variance

The difference between the actual quantity of materials used in production and the standard quantity expected, multiplied by the standard cost per unit.

Standard Quantity

The predetermined amount of materials or inputs planned to be used in a manufacturing process or task.

Standard Price

A predetermined cost that companies assign to goods and services, used as a benchmark to measure the actual cost performance.

Standard Cost

A predetermined cost of manufacturing a product or providing a service, used for budgeting and performance evaluation.