WarmUp 1. Why did Mendeleev leave spaces in his periodic table

Feb 18­2:42 PM
Warm­Up
1. Why did Mendeleev leave spaces in his periodic table?
2. Identify each property below as more characteristic of a metal or a non­metal.
a. a gas at room temperature
b. brittle
c. malleable
d. poor conductor of electric current e. shiny
3. Identify the following elements as metals, nonmetals, or metalloids.
a. Calcium
b. Rhenium c. Germanium
d. Iodine
e. Lead
Feb 18­2:42 PM
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Feb 18­2:42 PM
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