Scientific theories
Bohr’s atomic theory?
What is planetary? 1913
Electrons move around a nucleus in specific energy levelsWhat is a period?
What is a horizontal row of a periodic table. Identified by the number of energy levels.
Rutherford’s Atomic theory?
What is Nuclear? 1911
Atoms were mostly empty space with a positive middle
What is a family or group?
What is a vertical column on the periodic table. Has similar chemical and physical properties. Identified by the number of electrons on the valence shell
what is sphere? 1803
Atoms are identical hard spheresWhat was Thomaon’s atomic theory?
What is plum pudding? 1904
Positive ball scattered with negative electrons
What is schrodinger’s atomic theory?
What is quantum? 1926
Electrons exist in clouds called orbits