Chemistry Unit 2 Review Part 2

The distance from the center of the nucleus of an atom to the edge of the surrounding electron cloud. 

• Electronegativity
• Ionization Energy
• Atomic Radius
• Attraction

The picture shows what trend?

• Electronegativity
• Atomic Number
• Atomic Radius
• Ionization

Atomic radius generally increases as we move __________.  

• down a group and from right to left across a period 
• up a group and from left to right across a period 
• down a group and from left to right across a period 
• up a group and from right to left across a period 

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Which atom has the largest atomic radius?

• fluorine
• helium
• francium
• hydrogen

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The atom with the largest atomic radius in Group 18 is 

• Ar
• He
• Kr
• Rn

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As you move across the periodic table atoms tend to get smaller because ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

Compared to the atomic radius of a sodium atom, the atomic radius of a magnesium atom is smaller. The smaller radius is primarily a result of the magnesium atom having 

• smaller nuclear charge
• fewer principal energy levels
• greater nuclear charge
• more principal energy levels

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Within period 2 of the periodic table, as the atomic number increases, the atomic radius generally

• decreases
• increases
• remains the same
• none of the above

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Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

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Which of the following elements has the smallest atomic radius?

• Caesium
• Calcium
• Sulfur
• Fluorine

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