Periodic Trends Answers

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Which element would most likely have an electron affinity measuring closest to zero?

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Which element has a larger atomic radius than sulfur?

chlorine

cadmium

fluorine

oxygen

Which best describes ionization energy?

energy needed to add an electron to a neutral atom in the gas phase

energy needed to add an electron to a neutral atom in the liquid phase

energy needed to remove an electron from an atom or ion in the gas phase

energy needed to remove an electron from an atom or ion in the liquid phase

Which element has the smallest atomic radius?

calcium

potassium

scandium

titanium

Which element would release the most energy while adding an electron to a neutral atom in the gas phase?

Which correctly summarizes the trend in electron affinity?

It tends to be very high for group 2.

It tends to be more negative across a period.

It tends to remain the same across periods.

It tends to be more negative down a group.

Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atoms of which element will have the least attraction for an electron?

Which ion was formed by providing the second ionization energy to remove an electron?

Ca2+

N3–

Fe3+

S2–

When electrons are added to the outermost shell of a carbon atom, it forms

an anion that has a larger radius.

an anion that has a smaller radius.

a cation that has a larger radius.

a cation that has a smaller radius.

Selected properties of antimony (Sb) and iodine (I) are listed in the table below.ElementAtomic radius(pm)First ionization energy(kJ/mol)Electron affinity(kJ/mol)ElectronegativitySb145?–1032.05I1401008–295?Which predictions can most likely be made?

Sb has a lower ionization energy but a higher electronegativity than I.

Sb has a higher ionization energy but a lower electronegativity than I.

Sb has a lower ionization energy and a lower electronegativity than I.

Sb has a higher ionization energy and a higher electronegativity than I.

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Periodic Trends Answers

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