The correct order of closeness power of 3s,3p,3d orbitals with nucleus is :

The electron probability density for s-orbitals is highest in the center of the orbital, or at the nucleus.For one principal energy level, the penetrating power of an electron follows this trend in subshells: s>p>d>fAnd overall, the penetrating power of an electron follows this trend:1s>2s>2p>3s>3p>4s>3d>4p>5s>4d>5p>6s>4fThe outer energy levels penetrate the inner levels so the shielding of the core electrons is not totally effectiveWithin the same energy level, s>p>d>f