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Which of the following is not correct according to Dalton's atomic theory?

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Important Questions on Atoms and Molecules

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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
Which of the following represents 1 u?
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
Who formulated the law of constant composition?
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9th CBSE
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The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
What is the molecule C60 called?
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
Why the atomic masses are not the actual masses of atoms?
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
Calculate the formula unit mass of Na2CO310H2O. Atomic masses: Na = 23. 0 u, C = 12. 0u, O= 16. 0u, H = 1u
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
One of the following molecules has atomicity of four _____.
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
Why is atomic mass taken as the average value?
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 8 - Atoms and Molecules>Practice Questions
What is the actual mass of an atom of C-12 isotope?