What is the maximum covalency of the first-period elements? Why?

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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Amongst the given options,which of the following molecules/ions acts as a Lewis acid?

The bond dissociation energies of $F_2, Cl_2, Br_2$ and $I_2$ are $37, 58, 46$ and $36 \ kcal/mol$ respectively. Which of these has the strongest bond?

How many electrons are shared between atoms in a double bond?

If a molecule $X_2$ has a triple bond,then $X$ will have the electronic configuration

Which one is a Lewis acid?

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