The elements are to be classified as metals, non-metals or metalloids. Concept Introduction: Metals: Most elements are metals. They are usually shiny, very dense, and only melt at high temperatures. Metals are malleable and ductile. Metals are good conductors of heat and electricity. Metals are usually placed on left hand side of the periodic table. Non-Metals: Non-Metals are placed on the right side of the periodic table. Their surface is dull and they are bad conductors of heat and electricity. They have low density and will melt at low temperatures. They are brittle and non- ductile. Metalloids: Examples of metalloids include boron, silicon, and arsenic. Metalloids have some of the properties of metals and some nonmetallic characteristic. They are placed on a zigzag line between metal and nonmetals in the periodic table. The characteristics of metalloids are as following: dull or shiny usually conduct heat and electricity, though not as well as metals often make good semiconductors often exist in several forms often ductile often malleable may gain or lose electrons in reactions
The elements are to be classified as metals, non-metals or metalloids. Concept Introduction: Metals: Most elements are metals. They are usually shiny, very dense, and only melt at high temperatures. Metals are malleable and ductile. Metals are good conductors of heat and electricity. Metals are usually placed on left hand side of the periodic table. Non-Metals: Non-Metals are placed on the right side of the periodic table. Their surface is dull and they are bad conductors of heat and electricity. They have low density and will melt at low temperatures. They are brittle and non- ductile. Metalloids: Examples of metalloids include boron, silicon, and arsenic. Metalloids have some of the properties of metals and some nonmetallic characteristic. They are placed on a zigzag line between metal and nonmetals in the periodic table. The characteristics of metalloids are as following: dull or shiny usually conduct heat and electricity, though not as well as metals often make good semiconductors often exist in several forms often ductile often malleable may gain or lose electrons in reactions
Solution Summary: The author explains metals, non-metals, and metalloids. Metals are shiny, malleable, ductile and good conductors of heat and electricity.
The elements are to be classified as metals, non-metals or metalloids.
Concept Introduction:
Metals: Most elements are metals. They are usually shiny, very dense, and only melt at high temperatures. Metals are malleable and ductile. Metals are good conductors of heat and electricity. Metals are usually placed on left hand side of the periodic table.
Non-Metals: Non-Metals are placed on the right side of the periodic table. Their surface is dull and they are bad conductors of heat and electricity. They have low density and will melt at low temperatures. They are brittle and non- ductile.
Metalloids: Examples of metalloids include boron, silicon, and arsenic. Metalloids have some of the properties of metals and some nonmetallic characteristic. They are placed on a zigzag line between metal and nonmetals in the periodic table. The characteristics of metalloids are as following:
dull or shiny
usually conduct heat and electricity, though not as well as metals
Predict the products of this organic reaction:
+
H
ZH
NaBH3CN
H+
n.
?
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structure.
X
What is the missing reactant R in this organic reaction?
+ R
H3O+
+
• Draw the structure of R in the drawing area below.
• Be sure to use wedge and dash bonds if it's necessary to draw one particular enantiomer.
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structure.
What would be the best choices for the missing reagents 1 and 3 in this synthesis?
1
1. PPh3
2. n-BuLi
2
• Draw the missing reagents in the drawing area below. You can draw them in any arrangement you like.
• Do not draw the missing reagent 2. If you draw 1 correctly, we'll know what it is.
• Note: if one of your reagents needs to contain a halogen, use bromine.
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