Final Exam Prep S22: 2.1.A.1 Electron Configuration and PES

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, which determines its chemical properties.

Front

What does PES stand for in chemistry?

Back

Photoelectron Spectroscopy, a technique used to study the energy levels of electrons in atoms.

Front

How many electrons can the 1s orbital hold?

Back

2 electrons.

Front

What is the maximum number of electrons in the second energy level (n=2)?

Back

8 electrons.

Front

What is the electron configuration for Magnesium (Mg)?

Back

1s² 2s² 2p⁶ 3s².

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does Magnesium have?

Back

2 valence electrons.

Front

What is the significance of the PES spectrum?

Back

It provides information about the energy levels and number of electrons in an atom.

Front

Which element has the electron configuration 1s² 2s² 2p⁶ 3s²?

Back

Magnesium.

Front

What is the identity of element Z if its electron configuration is 1s² 2s² 2p⁶ 3s²?

Back

Magnesium.