Have each member of your group sketch a periodic table...

Name: Problem 140, Chapter 8: Chemistry A Molecular Approach
Uploaded: 2019-07-06T22:07:35-08:00
Duration: 3 min 3 s
Channel: Keenan Mintz
Description: Have each member of your group sketch a periodic table indicating a periodic trend (atomic size, first ionization energy, metallic character, etc.). Have each member present his or her table to the rest of the group and explain the trend based on concepts such as orbital size or effective nuclear charge.

Have each member of your group sketch a periodic table indicating a periodic trend (atomic size, first ionization energy, metallic character, etc.). Have each member present his or her table to the rest of the group and explain the trend based on concepts such as orbital size or effective nuclear charge.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Orbital Size

Orbital size refers to the spatial extent or volume of the region in an atom where there is a high probability of finding an electron. It plays a significant role in determining atomic properties as larger orbitals can result in a more diffuse electron cloud, affecting the atom's size and how strongly the electrons are held by the nucleus.

Effective Nuclear Charge

Effective nuclear charge is the net positive charge experienced by an electron in an atom, calculated by subtracting the shielding effect of the inner electrons from the total nuclear charge. This concept is crucial in explaining trends in atomic properties; as the effective nuclear charge increases, electrons are drawn closer to the nucleus, resulting in smaller atomic radii and generally higher ionization energies.

Periodic Trends

Periodic trends are the systematic variations in the physical and chemical properties of elements as you move across periods or down groups in the periodic table. These trends, such as changes in atomic radius, ionization energy, and metallic character, emerge due to the arrangement of electrons in atomic orbitals and the influence of effective nuclear charge. They help explain why elements behave similarly within the same group and differently across a period.

Transcript

Please give Ace some feedback