Question:

Which of the following statements is false?

Updated On: Jun 27, 2024
  • $BH_3$ is not a stable compound.
  • All the B-H bonds in $B_2H_6$ are equal.
  • The horon hydrides are readily hydrolysed.
  • Boron hydrides are prepared by the action of dil. HCl on \({Mg_3B_2}\) .

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The Correct Option is B

Solution and Explanation

All the B-H bonds in \(B_2H_6\) are not equal. The four terminal B-H bonds are shorter (B-H bond length = 1.19 \(\mathring A\)) than the two bridged B-H-B bonds (bond length - 1.33 \(\mathring A\)).

So, the correct option is (B): All the B-H bonds in $B_2H_6$ are equal.

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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: