How do the elements exhibit a range of band gaps?

Q: In this lab you will use a spectrometer to measure the wavelengths ofseveral visible lines emitted…

A: Energy level diagram showing the first four lines of Balmer series is,

Q: A displacement vector points in a direction of = 28° left of the positive y- axis. The magnitude of…

A:

Q: What causes dust particles and tiny grains of soot to move with Brownian motion?

A: Dust particles and tiny grains of soot move with Brownian motion. The Brownian movement is the…

Q: Why do you think that the energy level in the n- region is lower than the p-region?

A: The n-type region has trivalent impurity while a p-type region has pentavalent impurity.

Q: What observable characteristic is common among all the solutions? What substance provides this…

A: Given : What are the common observable characteristic of solution.

Q: Why is phosphorescence emission weak in most substances

A: Phosphorescence is the emission of light from a substance after it has been exposed to radiation and…

Q: Consider just four of the energy levels in a certain atom as shown in the as diagram below, use the…

A: Six  spectral lines will result from all possible transitions among these levels.

Q: A proton moves along the x-axis where some arrangement of charges has produced the potential V(x) =…

A:

Q: Why are the elements with good electrical conductivities also generally good thermal conductors?

A: Conductivity is the property of the metal by which it able to conduct heat. It is property of the…

Q: Find the orientation of the elements upon which they act?

A:

Q: Describe two ways an atom can become excited.

A: The electrons inside the atom orbit in a shell. These shells have characteristic energy.   The…

Q: Approximate a molybdenum spectrum as bichromatic, with 80% of photons emitted at 18 keV and 20% of…

A:

Q: Write a ~1-2 page summary in answer to the question, “What does the emission spectrum of the…

A: Hydrogen has one electron attached to its nucleus. Energy in hydrogen atom is related to the energy…

Q: (a) Identify the number of electrons in the ground-state outer shell of atomic oxygen (atomic number…

A: Part(a): The electronic configuration of the oxygen atom is 1s2 ,2s2 2p4. The number of electron in…

Q: Complete the sentence with the correct word choices: When charge is transferred between objects,…

A:

Q: How can an electron leap between atomic levels without passing through all the space in between?

A: An electron is a quantum subatomic particle that possesses dual character, that is it can act both…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: