Atomic Size Trends in the Periodic Table

The video tutorial explains how to determine which of the two atoms, magnesium (Mg) or sulfur (S), is larger in terms of atomic radius. It discusses the trend in atomic radii across the periodic table, noting that atomic size decreases across a period. By comparing Mg and S, which are in the same period, it concludes that Mg is larger than S. The video also briefly mentions that atomic size increases down a group but focuses on the comparison within the same period.

Which two elements are being compared in terms of atomic size?

• Magnesium and Oxygen

• Magnesium and Sulfur

• Sulfur and Chlorine

• Oxygen and Chlorine

What happens to atomic size as you move across a period in the periodic table?

• It decreases

• It increases

• It fluctuates

• It remains the same

What is the significance of removing transition metals in this discussion?

• To simplify the explanation

• To discuss noble gases

• To highlight metals only

• To focus on non-metals

Why is magnesium larger than sulfur?

• Because it is further to the left in the same period

• Because it has more protons

• Because it is in a different group

• Because it has more electrons

What is the general trend for atomic size as you move down a group in the periodic table?

• It decreases

• It increases

• It first increases then decreases

• It remains constant

Which element has a larger atomic radius, magnesium or sulfur?

• They are the same size

• Sulfur

• It depends on the temperature

• Magnesium