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Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?
- a)Only physical properties
- b)Only chemical properties
- c)In both physical and chemical properties
- d)thermodynamic properties
Correct answer is option 'C'. Can you explain this answer?
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Lothar Meyer proposed that on arranging the elements in order of incre...
Lothar Meyer proposed the periodic table in 1864. He arranged the elements in order of increasing atomic weights. He noticed that similarities appeared in both physical and chemical properties of the elements. The correct answer is option 'C' which means similarities appear in both physical and chemical properties.
Explanation:
The periodic table arranges the elements in a way that helps in understanding their properties. The modern periodic table is based on the electronic configuration of the elements. But the original periodic table was based on the atomic weight of the elements. Lothar Meyer was the first to realize that there is a periodicity in the properties of the elements when they are arranged in order of increasing atomic weights.
Physical properties are those that can be observed or measured without changing the chemical composition of the substance. Some examples of physical properties are:
- Melting point
- Boiling point
- Density
- Electrical conductivity
- Thermal conductivity
- Atomic radius
- Ionic radius
- Electronegativity
Chemical properties are those that can be observed during a chemical reaction. Some examples of chemical properties are:
- Reactivity with acids
- Reactivity with oxygen
- Reactivity with water
- Reduction potential
- Oxidation potential
Meyer observed that when the elements are arranged in order of increasing atomic weights, there is a periodicity in their physical and chemical properties. This means that elements with similar atomic weights have similar physical and chemical properties. For example, lithium, sodium, and potassium have similar physical and chemical properties because they all belong to the same group and have similar atomic weights.
Conclusion:
Lothar Meyer proposed the periodic table in 1864. He arranged the elements in order of increasing atomic weights. He noticed that similarities appeared in both physical and chemical properties of the elements. When the elements are arranged in order of increasing atomic weights, there is a periodicity in their physical and chemical properties.
Explanation:
The periodic table arranges the elements in a way that helps in understanding their properties. The modern periodic table is based on the electronic configuration of the elements. But the original periodic table was based on the atomic weight of the elements. Lothar Meyer was the first to realize that there is a periodicity in the properties of the elements when they are arranged in order of increasing atomic weights.
Physical properties are those that can be observed or measured without changing the chemical composition of the substance. Some examples of physical properties are:
- Melting point
- Boiling point
- Density
- Electrical conductivity
- Thermal conductivity
- Atomic radius
- Ionic radius
- Electronegativity
Chemical properties are those that can be observed during a chemical reaction. Some examples of chemical properties are:
- Reactivity with acids
- Reactivity with oxygen
- Reactivity with water
- Reduction potential
- Oxidation potential
Meyer observed that when the elements are arranged in order of increasing atomic weights, there is a periodicity in their physical and chemical properties. This means that elements with similar atomic weights have similar physical and chemical properties. For example, lithium, sodium, and potassium have similar physical and chemical properties because they all belong to the same group and have similar atomic weights.
Conclusion:
Lothar Meyer proposed the periodic table in 1864. He arranged the elements in order of increasing atomic weights. He noticed that similarities appeared in both physical and chemical properties of the elements. When the elements are arranged in order of increasing atomic weights, there is a periodicity in their physical and chemical properties.
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Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?a)Only physical propertiesb)Only chemical propertiesc)In both physical and chemical propertiesd)thermodynamic propertiesCorrect answer is option 'C'. Can you explain this answer?
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Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?a)Only physical propertiesb)Only chemical propertiesc)In both physical and chemical propertiesd)thermodynamic propertiesCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?a)Only physical propertiesb)Only chemical propertiesc)In both physical and chemical propertiesd)thermodynamic propertiesCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?a)Only physical propertiesb)Only chemical propertiesc)In both physical and chemical propertiesd)thermodynamic propertiesCorrect answer is option 'C'. Can you explain this answer?.
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