Which types of atoms are poor conductors, dull, and found to the right of the staircase?
nonmetals
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monster
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15
Which atom has a greater atomic radius- arsenic or bromine?
arsenic; it is farther left that bromine
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15
How many electrons can fit into the following energy levels (shells): 1, 2, 3?
1- two electrons
2- eight electrons
3- eight electrons
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20
Which isotope is represented by the Bohr model in the picture. Give the symbol and mass number for the isotope.
Mg-24
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10
What does the group number tell about an atom?
The number of valence electrons present.
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gift
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lifesaver
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10
What is the name for the group 2 elements?
Alkaline Earth Metals
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25
Draw a Bohr model for an atom of Na-23.
See instructor drawing. (11 protons, 12 neutrons, 11 electrons, 3 electron shells-2 electrons in shell 1, 8 electrons in shell 2, and 2 electrons in shell 3)
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5
Which particles are found in the nucleus?
protons and neutrons
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10
What is the name for the group 1 elements?
Alkaline Metals
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15
In which orbital block is tin found?
p
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10
What is an ion?
A charged atom.
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5
What is the charge of a proton?
+1
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5
Which particles are found in the cloud that surrounds the nucleus?