Which type of nuclear radiation is the most penetrating and can pass through several layers of concrete shielding?

Gamma Rays

Explanation:

Gamma rays are the highest penetrating power. It is  emitted from the nucleus of a radioactive atom during radioactive decaying. They are capable of travelling many yards in air. Gamma rays can easily penetrate a human body. Shielding this very high penetrating type of ionizing radiation requires a thick dense material such as several inches of concrete or lead.

Thus, gamma rays is the most penetrating and can pass through several layers of concrete shielding.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.