Police Officer Juan Dela Cruz already serve sixteen (16) years of service in the PNP. However, he did not comply the minimum educational requirement of a Four (4) Years degree course but he was able to attained the 72 units requirement. Does Police Officer Dela Cruz need to attain the required educational qualification? If Yes / No justify your answer.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.