Stern-Gerlach Experiment and spin quantum number : Revealing Electron Spin

The video explains the concept of electron spin and its discovery through the Stern-Gerlach experiment. It describes the experimental setup, involving a beam of silver atoms passing through a non-homogeneous magnetic field, leading to the observation of beam splitting. This phenomenon supports the idea of quantized spin states, represented by the spin quantum number. The video concludes with the mathematical representation of spin angular momentum.

What was the primary purpose of the Stern-Gerlach experiment?

• To measure the mass of silver atoms

• To demonstrate the existence of electron spin

• To determine the charge of electrons

• To study the behavior of neutrons

In the Stern-Gerlach experiment, what happens to the beam of silver atoms when it passes through the magnetic field?

• It disappears completely

• It splits into two beams

• It remains a single beam

• It splits into three beams

What did Stern and Gerlach conclude about the spin states of electrons?

• Electrons have two spin states

• Electrons have no spin states

• Electrons have three spin states

• Electrons have infinite spin states

What is the spin quantum number used to measure?

• The velocity of an electron

• The spin angular momentum of an electron

• The mass of an electron

• The charge of an electron

What does a spin quantum number of +1/2 indicate about the electron's spin?

• The electron is not spinning

• The electron spins clockwise

• The electron spins anticlockwise

• The electron spins randomly

How is the spin angular momentum of an electron mathematically represented?

• S * s + 1

• S divided by s + 1

• Square root of S into s + 1 H by 2π

• S + s * H

What is the value of the constant H bar used in the formula for total spin angular momentum?

• 0.50 into 10 to the power of -34

• 2.00 into 10 to the power of -34

• 1.05 into 10 to the power of -34

• 3.14 into 10 to the power of -34