Chemical Properties of Group 16 Elements

Give equations to show how the sulphuric acid is made from its corresponding anhydride.

The correct order of boiling points of ${\mathrm{H}}_2\mathrm{O},{\mathrm{H}}_2 \mathrm{S},{\mathrm{H}}_2\mathrm{Se}$ and ${\mathrm{H}}_2\mathrm{Te}$ respectively is

The main products $\mathrm{P}$ and $\mathrm{Q}$ of the following unbalanced disproportionation reaction are

${\mathrm{Se}}_2{\mathrm{Cl}}_2\to \mathrm{P}+\mathrm{Q}$

Assertion: Boiling point of ${\mathrm{H}}_2\mathrm{O}$ is more than that of ${\mathrm{H}}_2\mathrm{S}$.

Reason: Heat of vaporization of ${\mathrm{H}}_2\mathrm{O}$ is less than that of ${\mathrm{H}}_2\mathrm{S}$.

The correct option among the following is

When sulphur is treated with excess of fluorine, the compound formed is

Arrange the following in the order of property indicated for each set, ${\mathrm{H}}_2\mathrm{O}, {\mathrm{H}}_2\mathrm{S}, {\mathrm{H}}_2\mathrm{Sc}, {\mathrm{H}}_2\mathrm{Te}$ - increasing acid strength.

Arrange the following in order of increasing acid character: ${\mathrm{H}}_2\mathrm{O},{\mathrm{H}}_2 \mathrm{S},{\mathrm{H}}_2\mathrm{Se},{\mathrm{H}}_2\mathrm{Te}$.

Account for anomalous behaviour of oxygen.

Discuss the structure of ${\mathrm{SF}}_4$.

${\mathrm{H}}_2\mathrm{S}$ is a gas, while ${\mathrm{H}}_2\mathrm{O}$ is a liquid at room temperature. Explain.

Describe the hydrides of Group-$16$ under the following head:

Reducing power

Describe the hydrides of Group-$16$ under the following head:

Acidic character

Describe the hydrides of Group-$16$ under the following head:

Thermal stability

Of ${\mathrm{H}}_2 \mathrm{S}$ and ${\mathrm{PH}}_3$, which is more acidic.

Arrange the following hydrides of Group $16$ elements in the increasing order of thermal stability.

${\mathrm{H}}_2\mathrm{O},{\mathrm{H}}_2 \mathrm{S},{\mathrm{H}}_2\mathrm{Se},{\mathrm{H}}_2\mathrm{Te}$

Thermal stability decreases from ${\mathrm{H}}_2\mathrm{O}$ to ${\mathrm{H}}_2\mathrm{Te}$. Give reasons.

Why ${\mathrm{OF}}_6$ does not exist but ${\mathrm{SF}}_6$ exists?

The values of oxidation number of $\mathrm{S}$ in ${\mathrm{S}}_8,{\mathrm{S}}_2{\mathrm{F}}_2$ and ${\mathrm{H}}_2\mathrm{S}$ are respectively.

Sulphur hexafluoride is used as a gaseous electrical insulator. Give reason.

All bonds in ${\mathrm{SF}}_4$ are not equivalent. Comment.