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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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Mass number of an element is the sum of the number of protons and neutrons present in an atom of that element
Hint Not Available
What is the number of electrons that reside in the last shell of Sodium?
What is the number of electrons that reside in the last shell of Sodium?
Deuterium is an isotope of hydrogen and has 1 proton and 1 neutron.
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