Free CBSE Class 9 Science Unit 1-Matter - Its Nature & Behaviour Structure Of Atom Worksheets

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Sample CBSE Class 9 Science Unit 1-Matter - Its Nature & Behaviour Structure Of Atom Worksheet Questions


Electronic configuration  and chemical properties are dependent on one another in atom

1. True 2. False
Why is the valency of Argon atom zero?
What were the drawbacks of Rutherford’s model of an atom?
Write the one use of isotope of uranium.
From Rutherford’s ? - particle scattering experiment gives the experimental evidence for the statement that the nucleus of an atom is positively charged.
What are the limitations of Thomson atomic model?
What are canal rays?
What experiment was responsible for the discovery of atomic nucleus?
The atomic number and mass number of an element are 5 and 11 respectively. Calculate the valency of it.
The ratio of the radii of hydrogen atom and its nucleus is ~ 105. Assuming the atom and the nucleus to be spherical, what will be the ratio of their sizes?

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