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21 Cards in this Set
- Front
- Back
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Density
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left to right: increases (minus last group)
up to down: increases (toward Rn) |
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Ionization Energy
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left to right: increases
up to down: decreases (toward F) |
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Melting Point
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left to right: increases, then decreases at center
up to down: random (toward Co) |
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Electronegativity
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left to right: increases
up to down: decreases (toward F) |
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Electron Affinity
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left to right: increases (starting at second group)
up to down: decreases (toward F) |
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Atomic Radius
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left to right: decreases
up to down: increases (toward Fr) |
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Group 1
H, Li, Na, K, Rb, Cs, Fr |
alkali metals
+1 |
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Group 2
Be, Mg, Ca, Sr, Ba, Ra |
alkali earth metals
+2 |
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Group 3
B, Al, Ga, In, Tl |
+3
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Group 4
C, Si, Ge, Sn, Pb |
=
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Group 5
N, P, As, Sb, Bi |
-3
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Group 6
O, S, Se, Te, Po |
-2
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Group 7
F, Cl, Br, I, At |
halogens
-1 |
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Group 8
He, Ne, Ar, Kr, Xe, Rn |
noble gases
= |
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diatomic elements
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H, N, O, F, Cl, Br, I
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two valence electrons in outer shell
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H, He, Li, Be, B
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atomic number
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number of protons in nucleus
for neutral atom, also number of electrons |
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mass number
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number of protons in nucleus + number of neutrons in nucleus, weighted based on prevalence of various isotopes in nature
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Non-Metals (elements)
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hydrogen, helium, carbon, nitrogen, oxygen, fluorine, neon, phosphorus, sulfur, chlorine, argon, selenium, bromium, krypton, iodine, xenon, radon
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Metalloids (elements)
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boron, silicon, germanium, arsenic, antimony, tellurium, polonium, astatine
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Metals (elements)
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everything to the left of the "staircase"
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