Periodic Table of Elements PDF [ Printable ]

The periodic table of elements is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The standard form of the table was devised by Dmitri Mendeleev in 1869, who used it to predict the properties of unidentified elements yet to be discovered or synthesized. The…

Nasw Code of Ethics PDF

The National Association of Social Workers (NASW) Code of Ethics is a set of principles and guidelines designed to support social workers’ ethical practice. The code articulates the values that guide social work practice and provides a framework for making ethical decisions in professional practice. The code also sets forth the professional responsibilities of social…