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Question 101

Two main-group elements are in the same vertical column. What is the most useful broad prediction from that shared position?

  1. They must have identical atomic masses.
  2. They contain the same number of protons.
  3. They are always in the same physical state.
  4. They usually show similar chemical behavior.Correct answer

Explanation

Members of the same main-group column usually have similar outer-electron patterns, which often leads to similar chemical behavior. Sharing only a period does not provide the same family relationship, and identical behavior is too absolute.

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Question 101: Two main-group elements are in the same vertical column.… · The Periodic Table and Elements · Questena