100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Chemistry - Structure and Properties Exam Questions With Correct Answers. $11.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. Chemistry
  4.  
  5. Chemistry

Exam (elaborations)

Chemistry - Structure and Properties Exam Questions With Correct Answers.
 0 purchase

Chemistry - Structure and Properties Exam Questions With Correct Answers. What were the two problems with Bohr's model of the atom? - answerIt could only explain the line spectrum of hydrogen and not any other elements, and it wrongly suggested that the electron is a particle whose exact positi...

[Show more]

Preview 2 out of 13  pages

Document information

  • September 16, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • chemistry structure and properties exam question

Written for

All documents for this subject (2477)

Seller

avatar-seller
Brightstars

Reviews received

Content preview

©THEBRIGHTSTARS 2024


Chemistry - Structure and Properties Exam
Questions With Correct Answers.


What were the two problems with Bohr's model of the atom? - answer✔It could only explain
the line spectrum of hydrogen and not any other elements, and it wrongly suggested that the
electron is a particle whose exact position and velocity could be specified at any time.

How did Erwin Schrodinger contribute to the model of the atom? - answer✔In 1924, he
proposed a series of mathematical equations to calculate the probability of finding an electron in
a place at a certain time, and described the wave-like properties of the electron. He used these
equations and the concept of matter waves to develop the theory of wave mechanics.

Briefly describe wave mechanics - answer✔In wave mechanics, a mathematical function, called
a wave function or atomic orbital is associated with each possible state of the electron's motion.
Each atomic state (orbital) is described by four quantum numbers
What are the key changes in Schrodinger's model of the atom compared to Bohr's? -
answer✔Schrodinger stated hat electrons occupy specific energy levels/shells in an atom, and
that the number of electrons in each level is governed by the formula 2n^2. The atom is arranged
as layers within layers in terms of electron shells. The electrons behave in a wave-like manner
rather than as particles, and because of this property, they ore organizes in 3D orbitals rather than
2D orbits.

Define an orbital - answer✔An orbital defines a region of space where an electron is most
likely to be found 95% of the time. Orbitals are also known as electron clouds.

Compare orbits to orbitals - answer✔Orbits: 2D paths at a fixed distance from the nucleus. Can
be circular or elliptical in shape and have 2n^2 electrons per orbit.
Orbitals: 3D paths with variable distance from the nucleus. Have no fixed path and contains a
maximum of 2 electrons per orbital. Orbitals are also called sublevels or subshells and are further
classified based on shape.

What are the 4 types of orbitals studied in this course? - answer✔S-orbital, p-orbital, d-orbital
and f-orbital

Describe s-orbitals - answer✔S-orbitals are spherical in shape and only have one
type/orientation

, ©THEBRIGHTSTARS 2024
Describe p-orbitals - answer✔P-orbitals are dumbell shaped and have three types/orientations
(px, py, and pz)

Describe d-orbitals - answer✔D-orbitals are cloverleaf in shape and have five types/orientations

Describe f-orbitals - answer✔F-orbitals have multiple possible shapes and seven
types/orientations
What are the benefits of Schrodinger's model of the atom compared to Bohr's model? -
answer✔In Schrodinger's model of the atom, electrons are allowed to have specific energy
values within an atom, and this energy is dependent on the wave properties of the electrons and
the region around the atom where the electron is most likely to be found. This model of the atom
can also explain the line spectra of elements with more than one electron.

Describe Bohr's model of the atom - answer✔Bohr's model of the atom proposed that all
electrons were located in defined orbits around the nucleus that has fixed energy levels that are
based on the distance of electrons from the nucleus. In this model of the atom, it was believed
that electrons in a given quantum level had identical levels of energy.

What does n represent in regards to quantum level? - answer✔N represents that type of orbital,
with n=1 corresponding to an s-orbital, n=2 corresponding to a p orbital, etc

What is the formula for the maximum number of electrons in a quantum level? - answer✔2n^2

What is the formula for the number of orbitals in a quantum level? - answer✔n^2

What is the formula for the number of types of orbitals in a quantum level? - answer✔n

What are energy level diagrams? - answer✔Energy level diagrams are diagrams that show the
electrons and distribution of electrons in its orbital.

Draw/describe a sample energy level diagram - answer✔Half arrows pointing either up or down
(representative of electrons) are added to each space according to electron filling rules until the
appropriate number of electrons has been represented.

What is the Pauli Exclusion Principle? - answer✔The Pauli Exclusion Principle (aka opposite
sex rule) states that in any orbital, no two electrons can have the same quantum numbers; one
electron must have "up spin" and one must have "down spin"

What is the Aufbau Principle? - answer✔The Aufbau Principle (aka lazy tenant rule) states that
when electrons are added to an atom, they always fill the lowest available energy level, with a
few key exceptions

What is Hund's rule? - answer✔Hund's Rule (aka empty bus seat rule) states that every orbital
in a sublevel must be occupied by a single electron before paring begins. Usually these unpaired
electrons are represented as having "up spin" in diagrams.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Brightstars. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $11.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

68175 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$11.49
  • (0)
Add to cart
Added