Two elements, X and Y are in the same group on the periodic table because…

Two elements, X and Y are in the same group on the periodic table because they both have the same

  • A.
    number of electronic shells
  • B.
    number of valence electrons
  • C.
    atomic size
  • D.
    atomic number
Correct Answer: Option B
Explanation

The members of the same group always have the same number of electrons in the outer shell (i.e number of valence electrons).

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