In the periodic table,the metallic character of elements

  • A
    Decreases from left to right across a period and on descending a group
  • B
    Decreases from left to right across a period and increases on descending a group
  • C
    Increases from left to right across a period and on descending a group
  • D
    Increases from left to right across a period and decreases on descending a group

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Which properties in a period indicate the chemical reactivity of elements?

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Which pair of elements with the given atomic numbers is expected to have similar properties?

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