Electronic Configuration and General Properties — Prelims Questions

Which of the following statements regarding the atomic radii of Group 13 elements is INCORRECT?

Which of the following represents the correct order of first ionization enthalpy for Group 13 elements?

Which of the following statements correctly describes the stability of oxidation states for Thallium (Tl) in Group 13?

Which of the following elements in Group 13 is a non-metal?

The electronic configuration of an element in Group 13 is $[Ar] 3d^{10} 4s^2 4p^1$. What is the element, and what is its most common oxidation state?

Which of the following properties of Group 13 elements generally increases down the group?