1. A contestant in the American Chemical Society Laboratory Technician Beauty Co
ID: 549942 • Letter: 1
Question
1. A contestant in the American Chemical Society Laboratory Technician Beauty Contest was described in the following terms: Her hair was like spun [Ar]3d 4s, her skin was as soft as [Xej4f"sd'ós', her perfume was the hydride of [Ne]3s 3p', and her personality was completely [He]2s 2pl. Identify the elements and describe these 4 attributes of her in more conventional terms. (20 points) 2. Fill in the missing information from the table. (20 points) Example Be neutral Excited state Neutral atom, cation, or anion? Ground state, excited state, or impossible? element Electron configuration Li ls'2p Ne ls'2s 2p 1s 2s 2 1s 2s 2p 3s He ScExplanation / Answer
1. The no.of electrons in an element corresponds to its atomic number if the element mentioned is neutral. Argon's atomic number is 18. The element with the given configuration shows 8 electrons added to the existing 18 electron system, giving its atomic number to be 26, which corresponds to iron (Fe). Next, the element mentioned posseses 20 higher than Xe which is at 54 giving the mentioned element having an atomic number of 74 which corresponds to the element tungsten (W). Next, Neon's atomic number is 10. This gives the element of interest atomic number 16 which corresponds to sulfur (S). Finally, Helium's atomic number is 2 and the element mentioned is Boron.
In a nutshell, the contestant has been insulted by saying she has hair like spun iron, which is hardly ductile or malleable, skin like the metal tungsten and perfume like hydrogen sulfide which is among one of the worst-smelling molecules ever with a characteristic intense rotten-egg smell and to add to the insult, her personality was said to be "Bore-on".
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