11.2Chemical Properties of the Halogen Elements & the Hydrogen Halides

These flashcards cover the chemical properties of halogens and hydrogen halides, focusing on their reactivity, oxidising power, displacement reactions, and thermal stability.

What charge do halogens acquire when they react with metals?

Halogens acquire a 1- charge when they accept an electron from the metal.

How do halogens act as oxidising agents?

Halogens oxidise metals by removing an electron, which increases the oxidation number of the metal.

What trend occurs in the oxidising power of halogens as you go down the group?

The oxidising power of halogens decreases going down the group.

What happens to the electronegativity of halogens as you move down Group 17?

The electronegativity of halogens decreases going down the group.

Why does the reactivity of halogens decrease down the group?

Reactivity decreases due to increased atomic radii and shielding, making it harder to attract electrons.

What is the result of a more reactive halogen displacing a less reactive halogen?

The more reactive halogen will displace the less reactive one from a solution.

Write the equation for chlorine displacing bromine from bromide solution.

Cl (aq) + 2NaBr(aq) → 2NaCl(aq) + Br (aq).

What happens during the reaction of hydrogen with halogens as you go down the group?

The reactions become less vigorous as the halogens become less reactive.

Explain the trend in thermal stability of hydrogen halides down the group.

Thermal stability decreases as bond strengths weaken due to increasing atomic radius.

How does bond length affect the thermal stability of hydrogen halides?

Longer bond lengths result in weaker bonds, leading to decreased thermal stability.