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14 Cards in this Set
- Front
- Back
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What is the trend of atomic radius |
The radius increases as you go down the group The radius decreases as you go across a period |
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How do you measure the atomic radius? |
1/2 the distance between the nuclei of 2 atoms next to each other |
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How is an ion formed? |
It is formed by the loss or gain of one or more electrons |
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What is formed by the loss of one or more electrons |
Positive ions |
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What is formed by the gain of one or more electrons |
Negative ions |
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What is a cation |
Positive ion |
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What is an anion |
Negative ion |
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What is the shielding effect |
Electrons on the outside can not get closer to the nucleus because of the electrons of inside. The outers wander off to find a nucleus to attract to (turn into ions) |
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What is ionization energy |
The energy required to remove an electron from an atom |
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What is the trend of ionization energy |
Decreases from top to bottom Increases from left to right |
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Based on the ionic size, what are cations always |
Cations are always smaller than the atoms that they come from |
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Based on ionic size, what are anions always |
Anions are always larger than the atom that they come from |
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What is electronegativity |
The ability of an atom to attract electrons when the atom is in a compound |
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What is the trend for electronegativity |
It decrease within a group Increases from left to right in a period |
