‘Au’ is the symbol for which of the following elements?

Correct option is A

Correct Answer: (a) Gold
The chemical symbol ‘Au’ represents Gold, derived from its Latin name ‘Aurum’, meaning "shining dawn". Gold is a precious metal known for its lustrous yellow color, high conductivity, and resistance to corrosion.
Key Properties of Gold (Au):
Atomic Number: 79
Atomic Mass: 196.97 u
Melting Point: 1,064°C (1,947°F)
Boiling Point: 2,700°C (4,892°F)
Highly Malleable & Ductile: Can be drawn into thin wires and sheets without breaking.
Corrosion Resistant: Does not react with air, water, or most acids, making it ideal for jewelry and coins.
Gold is widely used in jewelry, electronics, dentistry, space technology, and as a monetary standard.
Information Booster: 
1. Aluminium (Al)
● Symbol: Al
● Atomic Number: 13
● Lightweight metal, used in aerospace, packaging, and construction.
2. Silver (Ag)
● Symbol: Ag (from Latin ‘Argentum’)
● Atomic Number: 47
● Best electrical conductor, used in jewelry, medicine, and electronics.
3. Argon (Ar)
● Symbol: Ar
● Atomic Number: 18
● Noble gas, used in welding, lighting, and insulation.