Which of the following sequences represents the atomic numbers of only representative elements?

  • A
    $55, 12, 48, 53$
  • B
    $13, 33, 54, 83$
  • C
    $3, 33, 53, 87$
  • D
    $22, 33, 55, 66$

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Similar Questions

The number of the following pairs of elements which exhibit a diagonal relationship is:
$1. B \text{ and } Si$
$2. Be \text{ and } Al$
$3. Li \text{ and } Mg$
$4. Al \text{ and } S$

Match the column-$I$ with column-$II$
$A. S \rightarrow S^{-}$ $P. \text{Endothermic process}$
$B. N^{-} \rightarrow N$ $Q. \text{Exothermic process}$
$C. O^{-} \rightarrow O^{2-}$ $R. \text{Inert gas configuration in product}$
$D. P \rightarrow P^{-}$ $S. \text{Half filled configuration in product}$
Correct match is $:-$

If the electronic configuration of $A^{-}$ is $[Ar] \ 4s^2 \ 3d^{10} \ 4p^1$,then $A^{+2}$ will belong to which group and period?

The statement that is true for the long form of the periodic table is

Which of the following is the correct order of $I.E.$ (Ionization Energy)?

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