Which of the following statements about a compound is incorrect?

Options

A. A molecule of a compound has atoms of different elements
B. A compound cannot be separated into its constituent elements by physical methods of separation
C. A compound retains the physical proepreties of its constituent elements
D. the ratio of atoms of different elements in a compound is fixed.

Explanation

To determine which statement about a compound is incorrect, let's analyze each option step by step.

### Step 1: Understand the definition of a compound
A compound is a substance formed when two or more different elements are chemically bonded together. The properties of a compound can differ significantly from the properties of the individual elements that make it up.

### Step 2: Evaluate each option

**Option A:** A molecule of a compound has atoms of different elements.
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