For vibranium, the concentration of vacancies at 300 K is 5.9 x 10^{-31}. What is the activation energy for vacancy formation for this material? a. 0.003 eV/atom
b. 0.75 eV/atom
c. 1.8 eV/atom
d. 102 eV/atom

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explanation:

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atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8