Question

Which of the following is considered of Transition Metals Cu 17 Ti Fe a) All of these are core a) Mn Naturally occurring chlorine is 24.47% CI3 that has an atomic mass of 34.969 amu and 75.53% C mass of 36.966 amu. Calculate the average atomic mass of chlorine 35.5 amu that has a 18- d) 72 amu None of thee is core c) 71 amu e) 36.5 amu b)

Answer 1

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* Deare Steedent, A transition element is defined as the one which has incompletely filled d-debitals in its ground state or in their most commion oxidation state Remember: zn la and He are not typical transition elemente because they have full do configuration in their ground state as well as in their common oxidation state @ Cu (atomic no = 29) Electionis configuration - [Am] 45' 3d "0 It has filled do orbitals in ground state but in its most common oxidation state ie tq. culta) = de It has incompletely filled d-debitals Transition metal Hence it is considered as 6 Mn Catomio no. =25) Electronic configuration = [Am] 3d 482 It has incompletely filled d-debitals in ground state; hence it is a transition metal ② Tê atomic no. = 22) Electronic configuration = [Ar]3d 48² Р.Т.О

It also has incompletely filled d-abitats in ground state. Hence it is a Teaneition metal @ Re (atomic no =26) Electronic configuration = [Ar 30 45² It also has incompletely filled d-debitals in ground state. It is also a Transition metal Hence all of these are Transition metde. Average atomic mass Atomic mass of isotope (1) x % abundance & Atomic mass of isotope (2) × % abundance Given ce 35 = 84.47% ; atomic mass=34-969 ame ce 37 - 75.53% atomie mass = 36.966 amu Thes, ang atomic max = (34.969) (24.47) + (36.966% (75.53) 100 = 36.477 ~ 36.5 amu Best Wishes !!