Questions: Which statement is not part of Dalton's atomic theory? Certain groups of elements have similar properties. Atoms combine in simple whole-number ratios to form compounds. All atoms of a given element have the same mass and other properties. Each element is composed of indestructible particles called atoms.

Solution Steps

Dalton's atomic theory is a fundamental concept in chemistry that describes the nature of atoms and how they combine to form compounds. The key points of Dalton's atomic theory include:

1. Each element is composed of tiny, indestructible particles called atoms.
2. All atoms of a given element are identical in mass and properties.
3. Atoms of different elements have different masses and properties.
4. Atoms combine in simple whole-number ratios to form compounds.

Let's analyze each statement to determine which one is not part of Dalton's atomic theory:

• "Certain groups of elements have similar properties." This statement is related to the periodic table and the concept of periodicity, not Dalton's atomic theory.
• "Atoms combine in simple whole-number ratios to form compounds." This is a part of Dalton's atomic theory.
• "All atoms of a given element have the same mass and other properties." This is a part of Dalton's atomic theory.
• "Each element is composed of indestructible particles called atoms." This is a part of Dalton's atomic theory.

The statement "Certain groups of elements have similar properties" is not part of Dalton's atomic theory. It relates more to the periodic table and the work of later scientists like Mendeleev.

Final Answer