Electronegativity and Electropositivity Concepts

This video tutorial explains the trends of electronegativity and electropositivity in the modern periodic table. Electronegativity is the tendency of an atom to attract electrons, which decreases down a group and increases across a period. Examples with oxygen, sulfur, lithium, and boron illustrate these trends. Electropositivity, the tendency to lose electrons and form positive ions, increases down a group and decreases across a period, demonstrated with lithium, sodium, and boron. The video concludes with a summary and encourages viewers to like, share, and subscribe.

What is the tendency of an atom to attract electrons called?

• Electron affinity

• Ionization

• Electronegativity

• Electropositivity

Why does oxygen have a higher electronegativity than sulfur?

• Sulfur is more reactive

• Sulfur has more electrons

• Oxygen has a smaller atomic size

• Oxygen has more protons

How does electronegativity change across a period?

• It fluctuates

• It increases

• It remains constant

• It decreases

Which element has a higher electronegativity: lithium or boron?

• Depends on the compound

• Lithium

• Boron

• Both have the same

What is the tendency of an atom to lose electrons called?

• Electronegativity

• Electropositivity

• Electron affinity

• Ionization

Why is sodium more electropositive than lithium?

• Sodium has more electrons

• Lithium has a larger atomic size

• Sodium has a larger atomic size

• Lithium is more reactive

How does electropositivity change down a group?

• It remains constant

• It fluctuates

• It increases

• It decreases

Which element is more electropositive: lithium or boron?

• Depends on the compound

• Both have the same

• Boron

• Lithium

What happens to electropositivity across a period?

• It decreases

• It increases

• It fluctuates

• It remains constant

Which of the following best summarizes the trend of electronegativity in the periodic table?

• Remains constant across a period and increases down a group

• Increases across a period and decreases down a group

• Decreases across a period and increases down a group

• Fluctuates across a period and decreases down a group