Question:

Glass reacts with HF to produce

Updated On: Jul 6, 2022
  • $\ce{Na_3AlF_6}$
  • $\ce{H_2SiF_6}$
  • $\ce{H_2SiO_3}$
  • $\ce{SiF_4}$
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The Correct Option is D

Solution and Explanation

Glass is $ {Na_2O . CaO . 6 \, SiO_2}$. It reacts with HF and gets dissolved. $ {Na_2O . CaO . 6 \, SiO_2 + 28 \, HF -> 2\, NaF + CaF_2 + 6 \, SiF_4 + 14 \, H_2O}$
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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: