Which elements have electron configurations that end in ns2np5? a) noble gases b) transition metals c) halogens d) inner transition metals

Explanation:

Halogen: The elements of group 17 of periodic table are halogens like F, Cl, Br, I etc. They have 7 valence shells electrons. The electronic configurations of each halogen is given as follow

From electronic configurations, it is cleared only halogens have valence shell elctrons in ns∧2 np∧5.

Transition elements: In transitions elements , electronic configuration ended in d- orbital.

Inner transition elements: In transitions elements , electronic configuration ended in f- orbital.

Nobel gases: Nobel gases elements have complete valence shells, Eight electrons like this ns2np6.

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

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.