Which of the following is a binary compound? k2so4 ni(oh)2 baco3 mn2o7

Answer : The correct option is, (D)

Explanation :

Binary ionic compound : It is a type of compound that is made up of the ions of the two different elements in which one element is a metal and another element is a non-metal.  It is only made up of two elements.

From the given options, option (A) is a binary ionic compound because in this compound Mn is a metal which combine with the an oxygen non-metal element.

While the other options are not a binary compound because it is made up of more than two elements.

Hence, the is a binary ionic compound.

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.