Chem Final Review

Which idea of John Dalton is no longer considered part of the modern view of atoms?

• Atoms are extremely small

• Atoms of the same elements have identical masses

• Atoms combine in simple whole number ratios to form compounds

• Atoms of different elements can combine in different ratios to form different compounds

energy levels correspond to the

• grop number

• proton number

• period number

each electron will occupy the lowest energy level available and fill in in order

• aufbau principle

• pauli exclusion principle

• hunds rule

two electrons can occupy the same orbital because they have opposite spins

• aufbau principle

• pauli exclusion principle

• hunds rule

single electrons are placed in certain sublevels one at a time with spins in the same direction and then will double up with electrons spinning in opp. directions

• aufbau principle

• pauli exclusion principle

• hunds rule

___ coined the term the atom

• Dalton

• Democritus

• Thomson

• Rutherford

proposed that all elements are made up of atoms and that atoms of the same element are alike

• Democritus

• Dalton

• Thomson

• Rutherford

discovered electrons using the plum pudding model, used the negative cathode ray tube which retracted negative electrons

• Dalton

• Thomson

• Rutherford

• Bohr

used the gold foil experiment to discover protons and the nucleus

• Dalton

• Thomson

• Rutherford

• Bohr

determined the energy levels, calculated the # of protons and electrons

• Rutherford

• Thomson

• Bohr

• Schrodinger