Periodic Table Trends and Properties

The video tutorial discusses elements in the third period of the periodic table, focusing on atomic size and metallic/non-metallic character trends. It compares the atomic sizes of sodium and magnesium, explaining that atomic size decreases from left to right in the periodic table. The video also covers the trends in metallic and non-metallic character, highlighting that metallic character decreases while non-metallic character increases from left to right. Additionally, it compares the non-metallic character of sulfur and chlorine, concluding that chlorine is more non-metallic.

Which elements are discussed in the third period of the periodic table?

• Potassium, Calcium, Scandium

• Hydrogen, Helium, Lithium

• Sodium, Magnesium, Aluminum

• Carbon, Nitrogen, Oxygen

What happens to the atomic size as you move from left to right in the periodic table?

• It remains the same

• It decreases

• It fluctuates

• It increases

Which element is larger in size, Sodium or Magnesium?

• Cannot be determined

• Both are the same size

• Magnesium

• Sodium

Which element is the most metallic in the third period?

• Sodium

• Sulfur

• Chlorine

• Aluminum

Which element is the most non-metallic in the third period?

• Magnesium

• Phosphorus

• Chlorine

• Sulfur

What happens to the metallic character as you move from left to right in the periodic table?

• It fluctuates

• It remains the same

• It decreases

• It increases

What happens to the non-metallic character as you move from left to right in the periodic table?

• It remains the same

• It decreases

• It fluctuates

• It increases

Which element is more non-metallic, Sulfur or Chlorine?

• Sulfur

• Chlorine

• Both are equally non-metallic

• Cannot be determined

Why is Chlorine considered more non-metallic than Sulfur?

• Because it is a gas

• Because it is more reactive

• Because it has a higher atomic number

• Because non-metallic character increases from left to right

What is the trend of non-metallic character in the periodic table?

• It remains the same

• It decreases from left to right

• It increases from left to right

• It fluctuates