Ch.6 Alkali metals, halogens, ions etc.

Front

What are halogens?

Back

Halogens are a group of nonmetals in Group 17 of the periodic table, known for being highly reactive and forming salts when combined with metals.

Front

Which alkali metal is least reactive in water?

Back

Sodium is the least reactive alkali metal in water compared to cesium, rubidium, and potassium.

Front

What are noble gases?

Back

Noble gases are nonreactive gases found in Group 18 of the periodic table, including helium, neon, argon, krypton, xenon, and radon.

Front

What is a cation?

Back

A cation is a positively charged ion that is smaller than its neutral atom due to the loss of one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion that is larger than its neutral atom due to the gain of one or more electrons.

Front

Which particle is the smallest: Br, Br^-, Se, or Se^-2?

Back

Br (bromine) is the smallest particle among the given options.

Front

What is the general trend of reactivity in alkali metals?

Back

Reactivity increases down the group in alkali metals, meaning lithium is the least reactive and cesium is the most reactive.

Front

What are the properties of halogens?

Back

Halogens are characterized by their high reactivity, ability to form salts, and exist as diatomic molecules (e.g., F2, Cl2).

Front

What is the significance of noble gases in chemistry?

Back

Noble gases are significant for their lack of reactivity, making them useful in applications requiring inert environments.

Front

How do cations and anions differ in size?

Back

Cations are smaller than their neutral atoms, while anions are larger due to the addition or removal of electrons.