(a) By using the data in Appendix 5, account for the isotopic distribution shown in Fig. 1.1b. 

(b) The mass spectrum of S₈ shows other peaks at lower values of m/z. By considering the structure of S₈ shown in Fig. 1.1c, suggest the origin of these lowermass peaks.

Figure 1.1b and 1.1c.

Data from Appendix 5

Relative abundance 100 75 90 25 0 256 258 260 Mass number (b) (c)