Quiz – Atoms, isotopes, ions and molecules

Which of the following constituent of an atom has negative charge ?

Which of the following constituent of an atom has positive charge ?

What is an atom ?

Which are the constituents of an atom ?

What's the name of an ion with positive charge ?

What is an isotope ?

The protons and neutron are kept together by ?

More than 99 % of the mass of the atom is contained in ?

What is an ion ?

The atomic number is equal to ?

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