10/22/09

We have a lab tommorow
-Each person in the group drops it 50 times at shoulder length with arm extended
-Record where it sticks in the target after each drop
-If it doesn't go through the paper, mark an x where it hit
-You decide whether it is in or out if it lands on a line
-Don't poke people with the darts (Ben).

Notes
-The 3d sublevel is higher in energy than the 4s sublevel, so they are filled in the order
4s3d
-D Block metals are typically have metallic properties and are often referred to as
transition elements
-P Block elements consist of all the elements of Groups 13-18 except helium.
-The p Block elements together with the s Block elements are called the main-group
elements
-Properties of elements of the p Block vary greatly.
-At it's right hand-end, the p Block includes all of the nonmetals except hydrogen
and helium
-All 6 of the metalloids are also in the p Block
-At the left-hand side and bottom of the block, there are 8 p Block metals.
-The elements of group 17 are known as the halogens
-flourine, chlorine, bromine, iodine, and astatine
-The halogens are the most reactive nonmetals
-They react vigourously with most metals to form examples of the type of
compound known as salts
-The metalloids, or semiconducting elements, are located between nonmetals and metals in
the p Block
-The metals of the p Block are generally harder and denser than the s Block alkaline earth
metals, but softer and less dense than the d Block metals
-In the periodic table, the f Block elements are wedged between Groups 3 and 4 in the
sixth and seventh periods
-Their position reflects the fact that they involve the filling of the 4f sublevel.
-The first row of the f Block, the lanthanides, are shiny metals similar in reactivity to the
Group 2 alkaline metals
-The second row of the f Block, the actinides, are between actinium and rutherfordium.
These actinides are all radioactive.