Question

Select the correct terms to complete the statement. The words in red, type which word

completes the statement correctly.
Electron-dot notation shows only the electrons in the innermost/outermost energy shell of
an atom. These electrons are called valence/orbital electrons and are/ are not involved in
chemical reactions. Elements with a full outer energy shell are typically very reactive/
unreactive.

Answer 1

Outermost energy shell

Valence electrons

are involved

Unreactive

Step-by-step explanation:

Electron-dot notation shows only the electrons in the outermost energy shell of an atom. These electrons are called valence electrons and are involved in chemical reactions. Elements with a full outer energy shell are typically very reactive.

• The notation shows only the chemical symbol of the element surrounded by dots that represents the valence electrons.
• The chemical symbol denotes the nucleus and all electrons except the valence electrons.
• These valence electrons are the outer shell electrons.
• They take part in chemical reactions and determines the chemical properties of an atom.
• Elements with completely filled outer orbitals are unreactive and they are the noble gases.