Hydrogen is the lightest and most abundant element in the universe. It is colourless, odourless, tasteless, and flammable gaseous substance. Halogen is a chemical element that forms a salt when it reacts with metal. ‘Hydrogen and the Halogens’ – this wall chart imparts information related to the difference between hydrogen and halogen, and more in an easy-to-read and simple-to-understand text with the help of detailed images. • Suitable for age-group 5-15 years • Size 48 x 73 cm • Colourful presentation • Durable • Both side laminated • Tear resistant This educational wall chart is ideal for all science enthusiasts and students of elementary grades. It can be easily displayed on walls of science classrooms, study rooms, or any learning centre and make learning interesting.