The periodic table & electron shells

• what are the vertical columns in a periodic table called ?

  Groups
• what are the horizental rows in a periodic table called ?

  Periods
• the elements in any one group all have the same number of electrons in their outer shell
• what do the groups (vertical columns) tell us in the periodic table ?

  the number of electrons in the outer shell
• what do the periods (horizental rows) tell us in the periodic table ?

  the number of shells
• how many electrons allowed in the first inner shell ?

  2
• how many electrons allowed in the second shell ?

  8
• how many electrons allowed in the outer shell ?

  8
• what is another name for group 1 in the periodic table ?

  Alkali metals
• what is another name for group 7 in the periodic table ?

  halogens
• what is another name for group 0 in the periodic table ?

  noble gases
• what side are the metals on in the periodic table ?

  left
• what side are the non-metals on in the periodic table ?

  right
• describe the features of group 0 elements ?

  • colourless gases
  • dont react at all
  • have a full outershell