Ref. Table S

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Ref. Table S

Freezing Point, Melting Point, Density, Electronegativity, Ionization Energy, Atomic Radius

The freezing point of bromine is

1 point

539°C

-539°C

7°C

-7°C

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At standard pressure, which element has a melting point higher than standard temperature?

1 point

F₂

Br₂

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Which element has the greatest density at STP?

1 point

calcium

carbon

chlorine

copper

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Which element is a liquid at room temperature?

1 point

I₂

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Which noble gas has the highest first ionization energy?

0 points

radon

krypton

neon

helium

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Which general trend is found in Period 2 on the Periodic Table as the elements are considered in order of increasing atomic number?

1 point

decreasing atomic mass

decreasing electronegativity

increasing atomic radius

increasing first ionization energy

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Which general trend is found in Period 3 as the elements are considered in order of increasing atomic number?

1 point

increasing atomic radius

increasing electronegativity

decreasing atomic mass

decreasing first ionization energy

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Which of these formulas contains the most polar bond?

1 point

H–Br

H–Cl

H–F

H–I

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Which trends appear as the elements in Period 3 are considered from left to right?

1 point

Metallic character decreases, and electronegativity decreases.

Metallic character decreases, and electronegativity increases.

Metallic character increases, and electronegativity decreases.

Metallic character increases, and electronegativity increases.

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An atom of which element has the largest atomic radius?

1 point

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Within Period 2 of the Periodic Table, as the atomic number increases, the atomic radius generally

0 points

decreases

increases

remains the same

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