Question

Question 12 A certain dibromide (AB) shows four peaks in its mass spectrum of 164, 166, 168 and-170. Assuming the element A has two isotopes A and A, deduce: i) the mass numbers X and Y. ii) all the possible isotopic compounds of the bromide ("Br, "Br]

that's all what was given.

Answer 1

A has two isotopes and Let assume that mass number y is greater than mass number x fol. 7707 Bad has two isotopes PB and sens. All possible combination of A and Br is as follows YA(8'80)2 row in mass spectrum A Bro compounds Shows four peaks lol. 164, 166, 168 and 170. The A borcati carton Compound 2003), is a Combination of A Clowers mass number isotope of A) and 7 B2 (lower mass number isotope of B8%) and this coir give the lowest peak in mass spectrum dol. peak 164. So, x+2 (79) = 164 or x = 164 - 158 aix = 6 The compound AC88), is a combination of YA Chigher mass member isotope of A) and 8lp Chigher mass member isotope of Br) and this will give highest peak in mass spectrum lol. Peak 170. So, y + 2 (81) - 170 or y = 170- 162

So, i) the mass number a=6 and mass number y=8. 1) All the possible isotopie compounds of bromide are as follows A (79800) 4(460), A (946x), and A (€100),