Metales alcalinos

Alkali metals, found in Group 1 of the periodic table, include lithium, sodium, potassium, rubidium, cesium, and francium. These metals are characterized by their softness, low density, and high reactivity, especially with air and water, forming alkaline compounds. Their reactivity increases with higher atomic numbers, necessitating storage in oil to prevent corrosion or combustion.

Which group in the periodic table do alkali metals belong to?

• Group 2

• Group 1

• Group 18

• Group 17

Which of the following is not an alkali metal?

• Lithium

• Sodium

• Calcium

• Potassium

What is a common characteristic of alkali metals?

• Brittle

• High density

• Softness

• Non-reactive

How do alkali metals react with air and water?

• They dissolve completely

• They remain unchanged

• They form acidic compounds

• They form alkaline compounds

Why are alkali metals usually stored in oil?

• To enhance their reactivity

• To make them more brittle

• To prevent corrosion and combustion

• To increase their density