Valence Electron WebQuest (by ?)
1. Go to http://www.wordiq.com/definition/Valence_electron
Using the information at this site, write a definition for valence
electron.
2. Visit the following site to answer the questions below;
http://dl.clackamas.cc.or.us/ch104-06/valence_electrons.htm
(a)
Do valence electrons show a repeating or periodic pattern?
Explain.
(b)
How many valence electrons does each of the following
elements have? Carbon, oxygen, nitrogen, fluorine, neon, and
sodium.
(c)
What is a quick way to determine the valence electrons for
an element?
3. Go to http://www.ausetute.com.au/lewisstr.html to answer the
following questions:
(a)
Explain what a Lewis structure is.
(b)
Write the Lewis dot notation for helium (He) and beryllium
(Be).
(c)
What group is He placed in?
(d)
Why is it that helium is shown here with the Group II alkali
earth metals?
(e)
What are the names given to the Group 1, 2, 7 and 8
elements?
(f)
What do atoms achieve by gaining or losing electrons?
(g)
Describe the state achieved by the electron, as a result of
gaining or losing electrons?
(H) What causes the formation of anions and cations? Give examples
of each in your answer.