Electron Configuration REVIEW ChemLab

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by electrons.

Front

What does the notation 1s² represent?

Back

It indicates that there are 2 electrons in the 1s orbital.

Front

How do you determine the group of an element from its electron configuration?

Back

The group can be determined by the number of electrons in the outermost shell (valence electrons). For example, elements in Group 7A have 7 valence electrons.

Front

What is the electron configuration for chlorine?

Back

1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What is the significance of the 'p' in 2p⁶?

Back

The 'p' indicates that the electrons are in a p orbital, which can hold a maximum of 6 electrons.

Front

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵?

Back

Chlorine (Cl).

Front

What is the electron configuration for silver (Ag)?

Back

[Kr] 4d¹⁰ 5s¹.

Front

What are the possible electron configurations for an element in Group 2A?

Back

They will have a configuration ending in s², such as 1s² 2s² for beryllium.

Front

What is the maximum number of electrons in the 3rd energy level?

Back

18 electrons (2 in 3s, 6 in 3p, and 10 in 3d).

Front

What is the relationship between electron configuration and chemical properties?

Back

The electron configuration determines how an element interacts with others, influencing its reactivity and bonding.