Group 13 Elements Properties and Trends

The video explores the properties of Group 13 elements, focusing on atomic and physical properties. It discusses electronic configurations, the nature of elements, and the impact of D and F orbitals' poor shielding effect. Key properties like atomic radius, density, ionization enthalpy, reducing property, and electronegativity are examined, highlighting trends and anomalies due to the shielding effect. The video concludes with a preview of chemical properties to be covered in the next video.

What is the electronic configuration of Group 13 elements?

• ns2 np1

• ns1 np2

• ns2 np2

• ns2 np3

Which element in Group 13 is considered a non-metal?

• Aluminum

• Gallium

• Boron

• Indium

What is the main reason for the variation in atomic radius in Group 13 elements?

• Presence of additional protons

• High electronegativity

• Poor shielding effect of D and F orbitals

• Strong nuclear charge

Why does the atomic radius decrease from aluminum to gallium?

• Increase in electron shells

• Decrease in atomic mass

• Poor shielding by D electrons

• Increase in nuclear charge

What causes the sharp increase in density from aluminum to gallium?

• Decrease in nuclear charge

• Increase in electron shells

• Increase in atomic mass

• Decrease in atomic volume

How does the poor shielding effect influence ionization enthalpy in Group 13?

• Decreases ionization enthalpy

• Increases ionization enthalpy

• Has no effect

• Causes ionization enthalpy to fluctuate

What happens to the reducing property of Group 13 elements as you move down the group?

• It increases

• It decreases

• It remains constant

• It fluctuates

What is the general trend of electronegativity in Group 13 elements?

• It fluctuates

• It decreases

• It increases

• It remains constant

Why does electronegativity increase in Group 13 elements?

• Increase in electron shells

• Decrease in nuclear charge

• Poor shielding effect of D and F electrons

• Increase in atomic mass

What is the effect of poor shielding on the chemical reactivity of Group 13 elements?

• Causes reactivity to fluctuate

• Has no effect

• Decreases reactivity

• Increases reactivity