Which metal is more reactive, zinc or sodium?

Which metal is more reactive, zinc or sodium?

• A. Zinc
• B. Sodium
• C. Iron
• D. Copper

Answer: (B)

Reactivity of metals comes down to how easily a metal atom can lose electrons to form positive ions. The more readily electrons are lost, the more reactive the metal is. Sodium is a Group 1 alkali metal with just one outer electron held very loosely, so it can be removed with little energy. That makes sodium respond very strongly, for example with water, producing hydrogen gas and a hydroxide solution. Zinc, iron, and copper have their outer electrons held more tightly, so they react more slowly and are less reactive under the same conditions. That’s why sodium is more reactive than zinc, iron, or copper, making it the correct choice.

Reactivity of metals comes down to how easily a metal atom can lose electrons to form positive ions. The more readily electrons are lost, the more reactive the metal is. Sodium is a Group 1 alkali metal with just one outer electron held very loosely, so it can be removed with little energy. That makes sodium respond very strongly, for example with water, producing hydrogen gas and a hydroxide solution. Zinc, iron, and copper have their outer electrons held more tightly, so they react more slowly and are less reactive under the same conditions. That’s why sodium is more reactive than zinc, iron, or copper, making it the correct choice.