| Shashank mishra asks : : Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture? 1.In alkali metals the reactivity increases, but in the halogens it decreases with increase in atomic number down the group. 2.The reactivity decreases in the alkali metals, but increases in the halogens with increase in atomic number down the group. 3.In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group. 4.Chemical reactivity increases with incr |
| Amalendu bhusan roy asks : What is the chemical formula of Gypsum |
| Akshay tidke asks : I am a 3rd year btech student in the branch chemical engg. can any one help me to take gate preparation |
| Vishal mittal asks : There is no Chemical Engineering in Gate here ...??? Why i cant see Chemical Engg. in any of the sites in here ?? |