Platinum is more ductile than gold. In science textbook (NCERT) it is mentioned Gold is the one but there is not mentioned regarding to the Platinum.

Introduction:
Ductility refers to the ability of a metal to be stretched into a thin wire without breaking. Both platinum and gold are highly ductile metals, but one of them is more ductile than the other. In this response, we will determine which metal, platinum or gold, is the most ductile.

Comparison of Platinum and Gold:
Platinum:
- Platinum is a dense, malleable, and ductile metal.
- It is known for its resistance to corrosion and high melting point.
- Platinum is often used in jewelry, electrical contacts, and laboratory equipment.
- It is a precious metal and is rarer than gold.

Gold:
- Gold is a highly malleable and ductile metal.
- It is known for its attractive yellow color and resistance to tarnish.
- Gold is widely used in jewelry, coinage, and electronics.
- It is also a precious metal and has been valued for centuries.

Ductility of Platinum vs Gold:
Platinum and gold are both highly ductile metals, but platinum is considered to be the most ductile.

Platinum's Ductility:
- Platinum is the most ductile metal known.
- It can be drawn into a wire as thin as 1 micron (1/1000th of a millimeter) without breaking.
- This exceptional ductility is due to the strong metallic bonds between platinum atoms, which allow the metal to be easily deformed without fracture.

Gold's Ductility:
- Gold is also highly ductile but not as ductile as platinum.
- It can be drawn into a wire as thin as 5 microns (1/200th of a millimeter) without breaking.
- Gold's ductility is a result of its face-centered cubic crystal structure, which allows the atoms to slide past each other when subjected to tensile forces.

Conclusion:
In conclusion, platinum is the most ductile metal when compared to gold. Its ability to be stretched into incredibly thin wires without breaking is unmatched. While gold is also highly ductile, it falls slightly short in comparison. Both metals, however, possess remarkable ductility and are valued for their physical properties in various industries.