{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HARD-VS-SOFT-2 - chemical bond But what electron shells are...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
chemical bond. But what electron shells are most deformable? To make a guess as to the answer to this question consider once again metals. In metals, a small voltage difference results in electrons travelling across the metal (ie., the metal conducts electrons). If electrons can move (almost) freely in a metal, they must be very deformable. (Professor Michael Sienko of Cornell studied the implications of these ideas forty years ago.) Let’s use this understanding to determine which p -shell elements have the squishiest electrons. We look at p -shell elements in their elemental form. Restricting our attention to groups 14 and 15 of the periodic table, we note that the group 14 elements with good conduction are Pb, Sn (especially in one of its two forms) and C (graphite). In group 15, Bi is the best conductor. We see that large atoms and multiple-bonded main group atoms have the most deformable of all electron shells. We therefore expect Te, Se and S to have squishier electron shells than O; Bi, Sb, As and P to
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern