Weathering of rocks and soil formation -> nickel

Nickel

Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.

Properties of Nickel

• Atomic number: 28
• Symbol: Ni
• Atomic mass: 58.6934 u
• Melting point: 1,455°C (2,651°F)
• Boiling point: 2,913°C (5,275°F)
• Density: 8.908 g/cm³
• Electron configuration: [Ar] 3d8 4s2

Uses of Nickel

Nickel is widely used in many industries due to its properties:

• Stainless steel production
• Alloys, such as cupronickel and nichrome
• Coins and jewelry
• Catalysts in chemical reactions
• Batteries
• Magnets

Health and Environmental Impact

Nickel can have both positive and negative effects:

• Essential trace element for some organisms
• Exposure to high levels of nickel can be harmful and cause allergic reactions
• Nickel compounds can be toxic to the environment

Study Guide Questions

1. What is the atomic number of nickel?
2. What are the uses of nickel in industries?
3. What is the electron configuration of nickel?
4. Discuss the health and environmental impact of nickel.