Question

1. what are the reasons that tin is used in alloy metals? (select 2 correct answers.) (2 points)

□ it is a rare element.
□ tin and niobium create a superconductive alloy — when sufficiently cooled, this material exhibits zero electrical resistance.
□ tin is highly resistant to corrosion and is used in alloys with other metals.
□ it is highly reactive and the most common metal.

Explanation:

• Analyze each option:
• "It is a rare element": Tin is not rare, so this is incorrect.
• "Tin and niobium create a superconductive alloy — when sufficiently cooled, this material exhibits zero electrical resistance": This is a valid reason for using tin in alloys (superconductive property).
• "Tin is highly resistant to corrosion and is used in alloys with other metals": Corrosion resistance is a key property for alloy usage, so this is valid.
• "It is highly reactive and the most common metal": Tin is not highly reactive (it's relatively stable) and not the most common metal, so this is incorrect.

Answer:

B. Tin and niobium create a superconductive alloy — when sufficiently cooled, this material exhibits zero electrical resistance.
C. Tin is highly resistant to corrosion and is used in alloys with other metals.