Electron Configuration and Valence Electrons

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 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 electron configuration for oxygen?

Back

1s² 2s² 2p⁴.

Front

What is the significance of the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons, leading to greater stability.

Front

What is a dot diagram?

Back

A visual representation of the valence electrons of an atom, using dots around the element's symbol.

Front

How many valence electrons do elements in Group 15 have?

Back

5 valence electrons.

Front

What is the electron configuration for aluminum (Al)?

Back

1s² 2s² 2p⁶ 3s² 3p¹.

Front

What is the electron configuration for neon?

Back

1s² 2s² 2p⁶.

Front

What is the relationship between electron configuration and the periodic table?

Back

The electron configuration of an element determines its position in the periodic table and its chemical properties.