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BJ Chem Ch 4 At His
BJ Chem Ch 4 Atomic Structure - History Pt. 2 of 2
Question | Answer |
---|---|
Person:first to refer to the smallest particles as atoms | Democritus |
model:first model to include atoms of each element having different masses | Dalton's atomic theory |
model:helped explain line spectra | Bohr's model |
any sample of water always contains 8 g of oxygen for every 1 g of hydrogen | law of definite composition |
principle:impossible to know both the energy and the exact position of an electron at the same time. | Heisenberg uncertainty principle |
principle:describes how electrons fill orbitals | Aufbau principle |
principle:describes how electrons fill a sublevel | Hund's rule |
principle:no two electrons in an atom can have the same set of four quantum numbers | Pauli exclusion principle |
region of space where an electron is most probably found is known as a(n) _______: | orbital |
Each atom can be identified by the number of _____ in its nucleus. | protons |
the principal energy level of an electron is the a) first b) second quantum number. | a) first |
person:cathode rays | Thomson |
person:"planatary" model of the atom | Neils Bohr |
person:x-rays | Wilhelm Roentgen |
person:prism spectroscope | Gustav KirchossRobert Bunsen |
person:magnetic resonance imaging | Raymond Damadian |
person:student who did gold foil experiment | Hans Geiger(Rutherford) |
person:protons | Ernest Rutherford |
person:neutrons | James Chadwick |
person:principle energy levels | Niels Bohr |