Chapter 2.8, Problem 2.12CYU

(a)

Interpretation Introduction

Interpretation:

For the mass spectrum of phosphorus tribromide, the molecular species give peaks at m/Z ratios of 270 and 272 has to be determined

Concept introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecules, depending upon the mass of the molecule.

Parent ion peak: It is defined as the prominent peak in the mass spectrum of the molecule which represents the not fragmented molecular ion in the given molecule with greater m/z value.

Base peak: It is the tallest peak in the spectrum.

$PB{r}_3$ ionize to form positive ions. Some of them fragment into smaller ions.

Elements present in $PB{r}_3$ are ${}^{79}Br,{}^{81}Brand{}^{31}P$

(b)

Interpretation Introduction

Interpretation:

The relative abundance of ions at m/Z ratios of 268 and 274 are approximately one-third of those at 270 and 270 has to be explained.

Concept introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecules, depending upon the mass of the molecule.

Parent ion peak: It is defined as the prominent peak in the mass spectrum of the molecule which represents the not fragmented molecular ion in the given molecule with greater m/z value.

Base peak: It is the tallest peak in the spectrum.

$PB{r}_3$ ionize to form positive ions. Some of them fragment into smaller ions.

Elements present in $PB{r}_3$ are ${}^{79}Br,{}^{81}Brand{}^{31}P$.