1. The smallest particle of an element which can take part in chemical reactions and may or may not exist independently is the   neutron   nucleus   compound   atom   Hint Half-n-half Clue   2. The currently accepted model of the atom is that of   Heisenberg   Bohr   de Broglie   Rutherford   Half-n-half Clue   3. The charge by mass ratio for electrons of various elements   increases with increase in atomic number.   is the same.   increases with increase in atomic mass.   decreases with increase in atomic mass.   Half-n-half Clue   4. According to Rutherford,   the protons revolves around the nucleus.   the electrons revolve around the nucleus.   the nucleus revolves around the electrons.   the neutrons revolve around the nucleus.   Half-n-half Clue   5. Atoms of an element with the same number of protons but different number of neutrons in the nucleus are known as   Isotopes   Isobars   Isosters   Twin Atoms   Half-n-half Clue   6. The sum of the numbers of the protons and neutrons in the atom of an element is known as   Atomic Number   Isotope Number   Mass Number   Molecular Weight   Half-n-half Clue   7. The average mass of an atom of an element is known as   Atomic Number   Molecular Weight   Isotope   Atomic Mass   Half-n-half Clue