Ionization Energy and Atomic Number Quiz

What does the graph in the image represent?

• Melting points of elements

• First ionization energy of elements

• Boiling points of elements

• Atomic radii of elements

In the graph, what is the general trend of ionization energy as atomic number increases across a period?

• Decreases

• Increases

• Remains constant

• Fluctuates randomly

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What is the unit of measurement for ionization energy as shown in the graph?

• Joules

• Kilojoules per mole

• Calories

• Watts

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What happens to ionization energy as you move across a period in the periodic table?

• It decreases

• It increases

• It remains constant

• It fluctuates randomly

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What is the effect on ionization energy when moving down a group in the periodic table?

• The ionization energy increases

• The ionization energy decreases

• The valence electrons are in energy levels farther from the nucleus

• The shielding effect is less

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Why do noble gases have high ionization energies?

• They have a full outer shell of electrons

• They have low atomic numbers

• They are highly reactive

• They have fewer protons

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What is the reason sulfur is to the right of phosphorus on the periodic table?

• It has a larger atomic radius

• It has a smaller atomic radius

• It has fewer protons

• It has more electrons

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Why is nitrogen above phosphorus on the periodic table?

• It has a larger atomic radius

• It has a smaller atomic radius

• It has more protons

• It has fewer electrons

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Which element has higher electronegativity than phosphorus?

• Sulfur

• Nitrogen

• Oxygen

• Carbon

What is the relationship between atomic size and electronegativity?

• Larger atoms have higher electronegativity

• Smaller atoms have higher electronegativity

• Atomic size does not affect electronegativity

• Electronegativity is the same for all atoms