Periodic Trends

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

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.

metallic character is greatest

• in the top right corner

• in the bottom right corner

• in the top left corner

• in the bottom left corner

Which element would be a better conductor of electricity?

• S

• Na

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As the elements in Period 3 are considered from left to right, they tend to

• lose electrons more readily and increase in metallic character

• lost electrons more readily and increase in nonmetallic character

• gain electrons more readily and increase in metallic character

• gain electrons more readily and increase in nonmetallic character

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Put these in order of increasing EN: F, N, B

• B < N < F

• B < F < N

• N < F < B

• F < N < B

Electronegativity is...

• how good an atom is at attracting electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

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The element with the largest electronegativity in the halogens is - 

• At
• F
• Cl
• Br

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The graph above shows the ionization energy values as the elements are arranged on the periodic table. Which conclusion cannot be drawn from the graph?

• The ionization energy drops significantly as you move down a group because the valence electrons are in a shell further from the nucleus.
• The ionization energy increases gradually as you move right across a period because the valence electrons are in a shell further from the nucleus.
• The ionization energy increases gradually as you move right across a period because you are adding more protons.
• The ionization energy increases when the valence electrons are more attracted to the nucleus.

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