Chapter 8, Problem 8.129MP

(a)

Interpretation Introduction

Interpretation:

Hybridization and geometry of each Sulfur atom has to be identified.

Concept Introduction:

VSEPR theory is constitutes a set of rules which predicts the shape of the molecule based on the orientation of bonding and non-bonding electrons in the molecule.

(b)

Interpretation Introduction

Interpretation:

Bond energy of $S=S$ has to be calculated.

Concept Introduction:

$\Delta H°$ is also calculated using bond dissociation energies as,

$\Delta H°=D\left(reac\tan t\text{ bonds}\right)-D\left(product\text{ bonds}\right)$

(c)

Interpretation Introduction

Interpretation:

The bonding in $S_2$ has to be described by molecular orbital diagram.  $S_2$ molecule is whether paramagnetic or diamagnetic has to be ascertained.

Concept Introduction:

Molecular orbital theory has set rules to depict the electronic structure of molecules.  Two atomic orbitals combine to form molecular orbitals.  The number of atomic orbitals combine equal to the number of molecular orbitals formed.

Molecular orbitals having lower energy are called bonding molecular orbitals.  Molecular orbitals having higher energy are called anti-bonding orbitals.

A molecular compound having unpaired electrons is said to be paramagnetic and a compound having all the electrons in it paired state is said to be diamagnetic.