Question

Anyone please answer this question of physics - if the size of nucleus (radius- 10^-15m) is scaled upto the tip of a sharp pin (10^-5m) , then what is the size of the atom?

Answer 1

If the size of the nucleus (10^-15 m) is scaled up to a size of the edge of a sharp pin (namely, 10^-5 m). It is a scale up by a factor of 10^10. The size of the atom is of the order of 10^-8 m (for ease of calculations I take the size of atom's outermist orbit as 100A°). Therefore, if we scale up the nucleus to the size of edge of a sharp pin, then the size of the atom will become of the order of 10^2 m. If we place the nucleus in the centre of a football stadium and it is scaled up to the size of edge of a sharp pin, then the orbits of the electrons will be touching the edges of the football stadium.