Question

what is the justification of strong peak in mass spectrum of bromine while iodine has only one peak?​

Answer 1

Answer:

M+=28 Most atoms except N have either: a) odd valency and odd mass (H, B, P, halides) or (b) even valency and even mass (C, O, S, Si). The M+ peak is usually the highest intensity peak in the cluster of peaks at highest m/z.

Answer 2

Answer:

Bromine has two isotopes br79 and br91. They have equal abandance. Therefore mass spectrum for bromine gives two strong peaks. But iodine has only one isotope I127 so it's spectrum gives only one peak at 127 amu

Explanation: