Rank the members of each set of compounds in order of increasing ionic character of their bonds. (a) HBr, HCl, HI HCl < HBr < HI HBr < HCl < HI HI < HBr < HCl (b) H2O, CH4, HF H2O < CH4 < HF CH4 < H2O < HF HF < H2O < CH4 (c) SCl2, PCl3, SiCl4 SCl2 < PCl3 < SiCl4 PCl3 < SCl2 < SiCl4 SiCl4 < PCl3 < SCl2

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally