How many unpaired electrons are there in aluminum?

Related questions

• How do electron configurations in the same group compare?
• How do the electron configurations of transition metals differ from those of other elements?
• How do electron configurations affect properties and trends of a compound?
• What is the electron configuration for a sodium ion?
• What is the electron configuration for a nitride ion?
• What is the electron configuration of chromium?
• What is the electron configuration of copper?
• What is Hund's Rule?
• What is the ground state electron configuration of the element germanium?
• What are some examples of electron configurations?