More Questions on This Topic :
Question 1. Valence electrons are used to get a clue of....
Question 2. In Hydrogen (H), number of neutrons is....
Question 4. Mass of a proton is equal to that of mass of....
Question 5. Mass of an electron is....
Question 9. Carbon-12 is chosen as standard atom because....
Question 10. Helium (He) is not an inert gas because....
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