C2 Periodic Table

• What is an isotope?

  Same element, different amount of neutrons.
• What does the relative atomic mass represent?

  It is the average mass of all isotopes of an element.
• What does the mass number indicate?

  It says how many protons and neutrons there are.
• What does the proton number indicate?

  It says how many protons there are in the nucleus.
• What happens if an atom does not have the same amount of electrons?

  It becomes an ion.
• What is the notation for Carbon-12?

  $^{12}_{6}C$
• What is the notation for Carbon-13?

  $^{13}_{6}C$
• Why are some mass numbers in the periodic table not whole numbers?

  They are the average mass of all isotopes.
• What is the atomic number of Chlorine-31?

  $^{31.5}_{17}Cl$
• What is the atomic number of Lithium?

  3
• What is the atomic number of Sodium?

  11
• How does reactivity change in relation to shielding in elements?

  Reactivity increases as shielding means the one with more shells is easier to lose the electron.
• What type of ions do Groups 1-4 form?

  They form positive ions by trying to lose an electron.
• What type of ions do Groups 5-7 form?

  They form negative ions by trying to gain electrons.
• What does a full outer shell indicate in terms of stability?

  It indicates that the atom is complete and stable.
• What are the characteristics of Group 1 Alkali Metals?

  • 1 electron on outer shell
  • Forms positive ions
  • Soft
  • Low density
  • Low melting point
• What is the chemical reaction of Sodium with water?

  2Na + 2H₂O = 2NaOH + H₂
• What are the characteristics of Group 7 Halogens?

  • Become dull in color
  • Change state from gas to liquid to solid
  • Trying to gain electrons
• How does the order of reactivity in Halogens work?

  The one with a stronger pull finds it easier to gain electrons.
• What are the characteristics of Group 0/8 Noble Gases?

  • Very unreactive
  • Have a full outer shell
• How do Transition Metals differ from other metals?

  They are shiny, sonorous, high in density, and high melting point.
• What is a unique property of Transition Metals regarding their ions?

  They can donate different numbers of electrons.
• What is the ion notation for Iron (III)?

  Fe³⁺
• Stop using my decks

  You thieving cow