Periodic Table

• What is the vertical column of non-metal elements on the far right of the periodic table called?

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

  Physical properties, such as boiling point
• What type of elements are found in Group 0?

  Non-metal elements
• Why do elements in Group 0 have similar chemical properties?

  They have the same number of outer shell electrons
• What is the definition of an element?

  A substance made of one type of atom only
• What is the periodic table?

  A tabular representation of all known elements
• What are the noble gases known for?

  Lack of chemical reactivity
• How do noble gases exist?

  As single atoms
• What do physical properties describe?

  The appearance or behavior of a substance
• What is the boiling point?

  The temperature a liquid changes to gas
• What trend do noble gases show in their boiling points?

  They all have low boiling points
• Which noble gas has the lowest boiling point?

  Helium
• What happens to the attractive forces between atoms as you go down Group 0?

  They become stronger
• What is the relationship between atom size and boiling point in noble gases?

  Larger atoms have stronger intermolecular forces
• What are intermolecular forces?

  Weak attractive forces between molecules
• What is needed to overcome intermolecular forces during boiling?

  More energy
• If radon is below xenon in Group 0, what can be predicted about its boiling point?

  It is likely between -100˚C and -50˚C
• What is the actual boiling point of radon?

  -61.7˚C
• How can one estimate the boiling point of radon based on the graph?

  By finding the midpoint between -100˚C and -50˚C
• What are the physical properties of noble gases?

  • Low boiling points
  • Exist as single atoms
  • Show trends in physical properties
• What are the chemical properties of noble gases?

  • Lack of chemical reactivity
  • Do not form compounds easily
• What is the significance of the trends in boiling points among noble gases?

  • Indicates strength of intermolecular forces
  • Relates to atomic size and structure
• 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
• Why do elements in the same group have similar chemical properties?

  They have the same number of outer electrons
• What are noble gases described as?

  Inert
• What does it mean for a substance to be unreactive?

  It does not easily take part in reactions
• What is the electronic structure of helium?

  2
• What is the electronic structure of neon?

  2.8
• What is the electronic structure of argon?

  2.8.8
• Why are noble gases unreactive?

  They have complete outer electron shells
• What happens when elements react regarding their outer shells?

  Atoms complete their outer shells
• Why do noble gases not form molecules?

  They do not share electrons
• What is an atom?

  The smallest part of an element
• What is an electron?

  A subatomic particle with a negative charge
• What is the significance of complete outer shells in noble gases?

  They indicate stability and lack of reactivity
• How does the electronic structure of noble gases contribute to their chemical properties?

  Complete outer shells prevent reactivity