CBSE /Class 9
Science MCQ Based On Structure of the atom introduction
Our free online Science test quiz for Class 9, CBSE will assist you to improve your Science skills on every concept in a fun interactive way.
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CBSE Class 9 Science Structure of the atom introduction
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Energy of the shells increase from the inner most to the outermost
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Mass number of an element is the sum of the number of protons and neutrons present in an atom of that element
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What is the number of electrons that reside in the last shell of Sodium?
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