Trends in Atomic Radii

The video tutorial explains how to determine which element, calcium or fluorine, has a larger atomic radius. It discusses the trends in the periodic table, noting that atomic size decreases across a period and increases down a group. Calcium, being on the left and lower in its group compared to fluorine, has a larger atomic radius. The tutorial concludes by summarizing these points and confirming that calcium is indeed larger than fluorine.

What is the main focus of the video tutorial?

• Comparison of atomic masses between calcium and fluorine

• Comparison of electron configurations between calcium and fluorine

• Comparison of atomic radii between calcium and fluorine

• Comparison of chemical reactivity between calcium and fluorine

What is the general trend of atomic radii as you move across a period in the periodic table?

• Atomic radii remain constant

• Atomic radii decrease

• Atomic radii fluctuate randomly

• Atomic radii increase

Where is calcium located in the periodic table?

• Group 17

• Group 1

• Group 2

• Group 18

Why is fluorine smaller than calcium?

• Fluorine has fewer electrons

• Fluorine is further to the right in its period

• Fluorine is higher up in its group

• Fluorine has more protons

What happens to atomic radii as you move down a group in the periodic table?

• Atomic radii remain constant

• Atomic radii decrease

• Atomic radii increase

• Atomic radii fluctuate randomly

Which element has a larger atomic radius, calcium or fluorine?

• It depends on the isotope

• Calcium

• Fluorine

• Both have the same atomic radius

What are the two main reasons calcium has a larger atomic radius than fluorine?

• Calcium is a metal and fluorine is a non-metal

• Calcium has a higher atomic number and more protons

• Calcium is further left and lower in its group

• Calcium is more reactive and has more electrons