Update Graded A+
Who is known for the discovery of the electron and his work with the cathode ray tube?
✔✔ J.J. Thomson
Who developed the periodic table and organized elements by their atomic mass?
✔✔ Dmitri Mendeleev
Who is credited with the creation of the first model of the atom with a positively charged nucleus
surrounded by electrons?
✔✔ Ernest Rutherford
Who proposed the quantum mechanical model of the atom and introduced the concept of
orbitals?
✔✔ Niels Bohr
Who formulated the laws of chemical equilibrium and introduced the concept of dynamic
equilibrium?
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, ✔✔ Henri Le Chatelier
Who discovered radioactivity and was awarded two Nobel Prizes for her work in physics and
chemistry?
✔✔ Marie Curie
Who is known for his contributions to the understanding of chemical bonds and molecular
structure, including the concept of hybridization?
✔✔ Linus Pauling
Who developed the concept of atomic number and refined the periodic table by organizing
elements based on their atomic number rather than atomic mass?
✔✔ Moseley
Who is credited with the discovery of the neutron and the development of the nuclear model of
the atom?
✔✔ James Chadwick
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