Question:
Which is the correct thermal stability order for $H_2E$ (E = O. S. Se. Te and $Po$) ?
Which is the correct thermal stability order for $H_2E$ (E = O. S. Se. Te and $Po$) ?
Updated On: Apr 17, 2024
- $H_2Po < H_2Te< H_2Se < H_2S < H_2O$
- $H_2Se < H_2Te< H_2Po < H_2O < H_2S$
- $H_2S < H_2O < H_2Se < H_2Te< H_2 Po$
- $H_2O < H_2S < H_2Se < H_2Te < H_2Po$
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The Correct Option is A
Solution and Explanation
On going down the group thermal stability order for $H_2 E$ decreases because H-E bond energy decreases
$\therefore$ Order of stability would be:-
${H_2 Po < H_2 Te < H_2 Se < H_2S < H_2 O}$
$\therefore$ Order of stability would be:-
${H_2 Po < H_2 Te < H_2 Se < H_2S < H_2 O}$
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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:
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- Group 16 Elements: Oxygen family
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