Atoms of which element contain 25 protons? magnesium (mg) aluminum (al) tin (sn) manganese (mn)

Manganese element has 25 protons.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom. It is represented as 'Z'

Z = Atomic number = Number of protons = Number of electrons

For the given options:

Option 1: Magnesium (Mg)

This element has an atomic number of 12, thus it will have 12 protons.

Option 2: Aluminium (Al)

This element has an atomic number of 13, thus it will have 13 protons.

Option 3: Tin (Sn)

This element has an atomic number of 50, thus it will have 50 protons.

Option 4: Manganese (Mn)

This element has an atomic number of 25, thus it will have 25 protons.

Hence, manganese element has 25 protons.

it's c. elements are placed in rows based on how may valencies electrons have.

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.