Elements with valency $1$ are

  • A
    always metals
  • B
    always metalloids
  • C
    always non-metals
  • D
    either metals or non-metals

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Similar Questions

$A, B$ and $C$ are three metals with atomic numbers $4, 11$ and $13$ respectively. Arrange the metals in the increasing order of their valency.

Helium atom has $2$ electrons in its valence shell,but its valency is not $2$. Explain.

$A$ helium atom has two electrons in its valence shell,but its valency is not two. Explain.

Summarize the rules for writing the distribution of electrons in various shells for the first eighteen elements.

Find out the valency of the atoms represented by the Fig. $(a)$ and $(b)$.

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