1-5 T/F 1.The Transition elements are named because they’re in the process of ch
ID: 1880053 • Letter: 1
Question
1-5 T/F
1.The Transition elements are named because they’re in the process of changing to an inner shell for adding new electrons.
2. The number of valence electrons among the transition elements is generally larger than 2.
3.An atom consists of nucleaus surrounded by negatively charged particles called electrons.
4. Compared to CPH lattice, the BCC lattice has the greater number of slip systems
5.Compared to BCC lattice, the FCC lattice has a smaller packing density
6-7:
a.decrease as you go down a column or group
b.increase as you go from upper left or lower right
c. increase as you go from left to right
d. vary randomly, regardless of position
e. are generally one or two
f. none of the above
6. The atom diameters of the non-transition elements(A-Group):
7. The valence electron of the non transient elements(A-Group):
8. The Metallic bond results in metallic characteristics because:
a. metallic atoms don’t have any valence electrons
b. the atoms are attracted to one another
c. valence electrons are donated to other atoms
d. atoms are at their highest energy level
e. none of the above.
Explanation / Answer
1. The transition elements can have an incomplete inner subshell containing valance electrons. Hence they can add electrons to this inner subshell. This statement is true.
2. False. it is either 1 or 2.
3. true. atom consists of a nucleaus at the center, surrounded by a group of negatively charged particles.
4. True. Bcc can have upto 48 slip systems, much higher than fcc or hcp.
5.False. Bcc has 68% whereas Fcc has 74%. Fcc has higher packing density than Bcc.
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