a. As defined by Spencer, Bodner and Rickard, Chemistry: Structure & Dynamics, 5
ID: 773228 • Letter: A
Question
a. As defined by Spencer, Bodner and Rickard, Chemistry: Structure & Dynamics, 5
th edition, what two factors contribute to the metallic character of an atom? How do they contribute?
b. Write the electron configurations for C, Si, and Sn. Based on electron configuration ALONE, would you expect these three atoms to have very similar physical and chemical properties or very different physical and chemical properties. Explain your answer in ONE sentence.
c. Using the values for ionization energy from Table 1, ChemActivity 20 and the equation for AVEE, explain why C is a nonmetal while Si is considered to be a semimetal.
d. Using your answers to Parts A and C above, and Table 2, ChemActivity 20, explain why carbon is a nonmetal, Si is a semimetal, and Sn is a metal.
e. Does your answer to Part D agree with your predicted answer to Part B? Briefly explain.
Explanation / Answer
A) B) Ccarbon: [He] 2s22p2............ Sisilicon: [Ne] 3s23p2.............. Sntin: [Kr] 4d105s25p2............These Elements are likely to possessvery similar physical and chemical properties Because they have the same number of electrons in the Valence and Penultimate shell, And Belong to the same group.
C)Semimetalis a material with a very small overlap between the bottom of theconductionbandand the top of thevalence band.asin Si, which is absent in C, thus Si Helps in transferring electrons which is nearly impossible in raw carbon (exception Graphite). Similarly...Sn can donate even more electronsBecause of the presence of d-orbital
D) No, the answer doesn't entirely agree with the other one. Electrical properties differ slightly in these elements.
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