Midterm Flashcards
Niel Bohr developed a mathematical atomic model
True
The number of electrons in the nucleus is called an atom’s atomic number
False, their called protons
The Heisenberg uncertainty principle states that we can know the energy and the momentum of an electron at the same time
False, we don’t know the precise momentum, time or space
Quantum numbers are solutions to the various wave equations scientists use to describe the energy, momentum and probable location of an electron
True
Two electrons in an atom can have the same quantum number
False, they are two different electrons which mean two different quantum numbers
Who was the first to develop an atom model based on experimental evidence
John dalton
Who named the negatively charged cathode ray particles electrons?
George johnstone Stoney
Who was a professor at Cambridge who reasoned that there was a small region in an atom called the nucleus?
Ernest Rutherford
Who was a assistant of Rutherford, he designed an experiment that used a thin sheet of gold foil and a beam of alpha particles?
Hans Geiger
