Periodic Properties — Prelims Questions

Consider the following statements regarding periodic properties: 1. The atomic radius generally increases across a period from left to right. 2. The first ionization energy of Nitrogen is higher than that of Oxygen. 3. Electronegativity generally decreases down a group in the periodic table. Which of the statements given above is/are correct?

Which of the following elements is expected to have the highest electron affinity (most negative value)?

The 'Lanthanide Contraction' has significant implications for the properties of elements. Which of the following is a direct consequence of this phenomenon?

Consider the elements Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), and Fluorine (F) from Period 2. Which of the following statements is correct regarding their first ionization energies?

In the context of environmental chemistry, which periodic property is most relevant to understanding the bioaccumulation of heavy metals like Cadmium (Cd) in biological systems?