Unit 2-3 Electrons and Periodic Trends

Who is considered the "Father of the Periodic Table" and arranged the elements based on atomic mass and their chemical and physical properties?

• John Dalton
• Dmitri Mendeleev

• Henry Moseley
• Ernest Rutherford

Which of the following is a nonmetal?

• Yttrium
• Vanadium
• Gallium
• Bromine

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Which of the following is a metal?

• Hydrogen
• Argon
• Calcium
• Sulfur

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Which of the following is an alkali metal?

• Sodium
• Strontium
• Iron
• Aluminum

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Place the following elements in order of increasing electronegativity: P, As, N, Bi

• Bi, N, As, P
• Bi, As, P, N
• N, P, As, Bi
• P, As, Bi, N

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Place the following elements in order of increasing atomic radius: Mg, Ca, Ba

• Ca, Mg, Ba

• Mg, Ca, Ba

• Ba, Ca, Mg

• Ba,Mg,Ca

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Put the following elements in order of increasing ionization energy: C, O, Be, F

• F, O, C, Be
• Be, F, O, C
• Be, C, O, F
• F, Be, O, C

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What group of metals is most chemically active?

• Alkaline Earth metals

• Transition metals
• Inner Transition metals
• Alkali metals

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Which of the following has the smallest atomic radius?

• Iodine, I
• Radon, Rn
• Selenium, Se
• Nitrogen, N

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The energy required to remove an electron from an atom is known as what?

• Electron shielding
• Electronegativity
• Ionization energy
• Ionic Radius