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