Chem U2:L2 Review

How did Dmitri Mendeleev organize the periodic table?

• By Atomic Number

• By Number of Electrons

• By Atomic Mass

• By Discovery Date

If an element has more energy levels it                 to take its valence electrons.

• is Easier

• is Harder

• makes no difference

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Who organized the table as it is set up now?

• Dmitri Mendeleev

• Henry Mosley

• Ernest Rutherford

• JJ Thomson

Which removed row is radioactive and mostly synthetic?

• Lanthanides

• Alkali Metals

• Actinides

• Transition Metals

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What is the most reactive metal?

• Fluorine

• Francium

• Xenon

• Radon

What do you call elements going left to right on the periodic table?

• Row

• Group

• Period

• Column

What do you call the half distance between the Nuclei of identical atoms that are bonded together?

• Radii

• Diameter

• Circumference

• Atomic Radius

What is the force acting between inner and outer electrons?

• Attraction

• Repulsion

• Shielding Effect

• Gravity

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What is the relative attraction an atom has for the electrons it shares in a molecule?

• ionization

• shielding effect

• repulsion

• electronegativity

Which group of elements are the noble gases?

• Group 1

• Group 6

• Group 18

• Group 13

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