Green and sustainable methods have sparked great interest lately. Action green starts from our laboratories, where young minds observe and understand the need for safer and sustainable methods. Complexometric estimation requires ammonium buffer to maintain high pH. This article explains a green method by replacing ammonium buffer and later highlights its advantage.

A simple low cost demonstration for the school and under-graduate students to explain the thermodynamics of condensation and evaporation process.

Periodic table consists of elements arranged based on theiratomic number to understand their properties. Many periodic table representations have been reported, but the position of hydrogen and f-block elements remains unclear. We report here a simple ‘Christmas tree model’ as an alternativeto the modern periodic table.

Writing electronic configurations of elements with higher atomic numbers is tedious. Students often find it difficult to remember the energy level order to write the electronic configuration of elements. This article introduces a simpler method to write the electronic configuration of elements and ions. The proof presented here is one without words but colours, with the assistance of dynamic geometric software.

One of the common physical chemistry experiments carried out in undergraduate programs is the determination of the partition coefficient (Ko) in which a solute is distributed be­tween organic and aqueous layers. After the experiment, the used-up organic layer and stock organic layer are discarded without proper measure, which poses a serious threat to our environment. In this article, we propose a simple, cost-effective and environment-friendly method to recycle the organic sol­vent used during the experiment.