In this exercise you will use the WebElements ( http://www.webelements.com/ ) and Chemical Elements ( http://www.chemicalelements.com/ )sites to find out information about an element. [Note: Each time this worksheet is printed from a browser that is JavaScript enabled a different element will be randomly assigned.]
| Element assigned: | Name of the element: ________________ |
CAS Registry Number: _______________
1. Give some historical background on this element.
2. Electronegativity: _____________ Atomic radius: ________________
3. Give at least six bulk properties of the element
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2
3
4
5
6
4. Give at least four thermal properties of the element
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2
3
4
5. Give four examples of compounds formed by this element and some data about each compound.
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2.
3.
4.
6. List the naturally occurring non-radioactive isotopes of this element and give the abundance of each isotope.
7. List the radioactive isotopes for this element and give the half-life and mode of decay of each isotope. (No more than six need be listed.)
8. Give some uses for this element.
9. Give some biological information for this element.
10. Give some geological information for this element.
| Questions? Comments?? |
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