Periodic Trends

Question 1

The graph below shows the electronegativities of the elements in the periodic table.Which would least strongly attract electrons from other atoms in a compound?

Revolt · Accepted Answer

elements of group 1

Question 2

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

Revolt · Accepted Answer

Ar

Question 3

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?

Revolt · Accepted Answer

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

Question 4

Among the elements of the main group, the first ionization energy increases

Revolt · Accepted Answer

from left to right across a period.

Question 5

Which correctly summarizes the trend in electron affinity?

Revolt · Accepted Answer

It tends to be more negative across a period.

Question 6

Which element has a larger atomic radius than sulfur?

Revolt · Accepted Answer

cadmium

Question 7

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

Revolt · Accepted Answer

Ca2+

Question 8

Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted to

Question 9

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

Question 10

Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?

Periodic Trends Answers

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