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Peridodic table

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  • There are ............ elements in the modern periodic table
    118
  • The s-block is located on the ........... side,contains ......... groups, which are ......& ..........
    left
  • The number of energy levels reaches ........... in the heaviest atom.
    seven
  • The modern periodic table contains ........ periods and .......... groups.
    7-18
  • Mendeleev dealt with the isotopes as different elements because they have ...............
    different atomic weight
  • The p-block is located on the ........... side,contains ......... groups, which are ......
    right- 6- 3A,4A,5A,6A,7A,0
  • In modern periodic table, elements are arranged according to their .........
    atomic number and the way the electrons fill the energy subshells
  • Elements in the periodic table are arranged in vertical columns called ............
    groups
  • The modern periodic table is classified into ......blocks, which are
    4,s,p,d,f
  • He discovered the main energy levels in the atom.
    Bohr
  • In Mendeleev's periodic table, elementa are arranged according to their........
    Atomic weight
  • The d-block is located in the ........... of the periodic table,contains ......... groups, which are ......
    middle-10
  • ELements in the periodic table are arranged in horizontal rows called ...........
    Periods
  • In Moseley's periodic table, elements are arranged according to their .........
    Atomic number
  • The f-block is located ........... the periodic table, cosists of ......... horizonatal series, which are ......
    below-2-lanthanides and actinides
  • He discovered that the atom has positively charged protons in its nucleus.
    Rutherford
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