Group VII elements are

Analyze the question: Group VII elements are the halogens (F, Cl, Br, I, At). The question asks which statement correctly describes them.

Concept: Halogens have 7 valence electrons, so they need just one more electron to complete their octet. This means they:

• readily gain electrons (they are electron acceptors)
• are highly electronegative (not electropositive)
• act as strong oxidizing agents, because an oxidizing agent is a substance that gains electrons and oxidizes another species

Evaluate each option:

• A. Monoatomic: Wrong. Halogens exist as diatomic molecules (F₂, Cl₂, Br₂, I₂). The noble gases (Group 0/18) are the monoatomic ones.
• B. Good oxidizing agents: Correct. Halogens readily accept electrons, e.g. Cl₂ + 2e⁻ → 2Cl⁻. Fluorine is the strongest oxidizing agent, and oxidizing power decreases down the group.
• C. Highly electropositive: Wrong. Electropositive elements lose electrons easily (like Group I metals). Halogens are highly electronegative.
• D. Electron donors: Wrong. Halogens are electron acceptors, not donors.

Answer: Option B, good oxidizing agents.

Tip: Remember "Group 7 = Gain 1 electron." Anything that gains electrons is an oxidizing agent. Also remember that Group 1 metals are the opposite: electron donors and good reducing agents.