Unit 3 Review: Periodic Table

Which elements contain atoms that form colored ions in solution? (3A)

• alkali metals

• alkaline earth metals

• transition elements

• noble gases

Answer explanation

TRANSITION METALS form colored ions in solution :) Don't FORGET!

Which elements have the most similar chemical properties? (3A)

• K and Na

• K and Ca

• K and Cl

• K and S

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How many halogens are in Period 3 of the Periodic Table? (3A)

• 3

• 1

• 4

• 2

Which of the following elements has the highest ionization energy? (3D)

• sodium

• aluminum

• calcium

• phosphorus

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(3D) The element with the highest attraction for electrons is

• chlorine

• bromine

• fluorine

• iodine

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(3A) In the modern Periodic Table, the elements are arranged according to

• atomic mass

• atomic number

• mass number

• oxidation number

(3D) A diatomic element with a high ionization energy would most likely be a 

• nonmetal with a high electronegativity

• metal with a high electronegativity

• metal with a low electronegativity

• nonmetal with a low electronegativity

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(3D) As we move down Group 16 in order of increasing atomic number, the electronegativity for each successive element

• Increases

• Decreases

• Remains the same

(3A) What element is in Group 2 and Period 7 of the Periodic Table?

• magnesium
• radon
• manganese
• radium

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Alkali Metals, Alkaline earth metals and halogens are found respectively in groups

• 1, 2 and 14
• 1, 2 and 18
• 1, 2 and 17
• 2, 13 and 17

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