Group 0 - chemical properties

• What is the group number of noble gases in the periodic table?

  Group 0
• What do elements in the same group of the periodic table show trends in?

  Physical properties, such as boiling point
• Why do noble gases have similar chemical properties?

  They have the same number of electrons in their outer shell
• What is the definition of a noble gas?

  Elements in group 0 of the periodic table, named for their lack of chemical reactivity
• What does it mean for a substance to be inert?

  It does not easily take part in chemical reactions
• What explains the inertness of noble gases?

  They have complete outer shells of electrons
• How many electrons does helium have in its outer shell?

  Two electrons
• How many electrons do neon and argon have in their outer shells?

  Eight electrons
• What happens to atoms when they react?

  They complete their outer shells by losing, gaining, or sharing electrons
• Why do noble gases not share electrons to form molecules?

  They already have stable arrangements of electrons
• What are the electronic structures of helium, neon, and argon?

  • Helium: 2
  • Neon: 2.8
  • Argon: 2.8.8
• What is the smallest part of an element that can exist?

  An atom
• What is an electron?

  A subatomic particle with a negative charge and negligible mass relative to protons and neutrons
• What is the significance of complete outer shells in noble gases?

  It means they have no tendency to lose, gain, or share electrons
• How does the electronic structure of noble gases contribute to their chemical properties?

  The complete outer shells make them unreactive
• What are the physical and chemical properties of group 0 elements?

  Physical properties:

  • Colorless gases
  • Low boiling points

  
  

  Chemical properties:

  • Inert and unreactive
  • Do not form molecules