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15
×
Give THREE examples of ions.
Na+, Cl-, K+
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15
×
What is the ionic charge of element X given: XCl
X: +1
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boom
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gold
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shark
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thief
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15
×
Define Valence Electrons.
Valence electrons are the outer-shell electrons of an atom. Valence electrons determine the reactivity of an atom.
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15
×
Define covalent bonding. Give three examples.
2 nonmetals bonded together. CO2, NH3, HF
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monster
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shark
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fairy
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thief
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15
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Which element is more electronegative: P or K? Why?
P. Increasing electronegativity.
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15
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What is the element with the lowest electronegativity: Pb C Sn Si
Pb
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15
×
Define Ionization Energy
the amount of energy needed to remove an electron from an atom.
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15
×
Why do isotopes have a different mass?
Isotopes have a different amount of NEUTRONS.
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15
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What is the trend of Atomic Radius?
Trend: Decreases from left to right across a period. Increases from top to bottom within a group.
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15
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Define Isotopes.
have the same atomic number (# of protons), but different mass numbers because different NEUTRONS.
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15
×
Write the formula for magnesium bromide.
MgBr2
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15
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Define ionic bonding. Give two examples.
Metal + Nonmetal. NaCl, MgS
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seesaw
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gift
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fairy
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baam
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15
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Arrange the following in order of increasing electronegativity: W, Pb, Ba, Po
Ba, W, Pb, Po
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