PT TRENDS 2025 -2026

Multiple Choice

Which groups of elements in the periodic table are the most reactive, and which group is the least reactive?

• Alkali metals and halogens are most reactive; noble gases are least reactive.

• Transition metals are most reactive; alkali metals are least reactive.

• Noble gases are most reactive; halogens are least reactive.

• Halogens and noble gases are most reactive; alkali metals are least reactive.

Multiple Select

Which of the following statements about Coulombic attraction is correct? Select all that apply.

• Coulombic attraction increases as the distance between charges decreases.

• Coulombic attraction is stronger in Model B than Model A.

• Coulombic attraction is the attraction between oppositely charged particles.

• Coulombic attraction decreases as the distance between charges increases.

Multiple Choice

Which of the following elements has the highest electronegativity value?

• Sodium (Na)

• Oxygen (O)

• Fluorine (F)

• Chlorine (Cl)

Multiple Choice

Which groups of elements in the periodic table are the most reactive, and which group is generally unreactive?

• Alkali metals and halogens are most reactive; noble gases are unreactive.

• Transition metals are most reactive; alkali metals are unreactive.

• Noble gases are most reactive; halogens are unreactive.

• Halogens and noble gases are most reactive; alkali metals are unreactive.