The cause of periodicity of properties is

  • A
    Increasing atomic radius
  • B
    Increasing atomic weights
  • C
    Number of electrons in the valency orbit
  • D
    The re-occurrence of similar outer electronic configuration

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Similar Questions

The atomic number of the element unnilennium is

The $IUPAC$ nomenclature of an element with electronic configuration $[Rn] 5f^{14} 6d^{1} 7s^{2}$ is.

Match the following:
List-$I$ (Atomic number) List-$II$ (Group number and Period number)
$A$. $56$ $I$. $9, 4$
$B$. $50$ $II$. $3, 6$
$C$. $27$ $III$. $14, 5$
$D$. $58$ $IV$. $2, 6$

If an orbital could contain $3$ $e^-$,the total number of groups in the periodic table would be:

The $10^{th}$ element in the periodic table resembles the elements of which period?

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