Why did Rutherford select a gold foil in his `alpha`-ray scattering experiment ?

Why did Rutherford used gold foil in a-ray scattering experiment ?

Rutherford's alpha-scattering experiment

The alpha -ray scattering experiment due to Rutherford

Why is a very thin gold foil used in the alpha scattering experiment?

The foil of which metal was used by Rutherford in his alpha -ray scattering experiment?

Rutherford concluded from his alpha -ray scattering experiment that there exists a heavy and dense body at the centre of the nucleus .