A given volume of methane diffuses in 20 seconds. How long will it take the same volume of sulphur (IV) oxide to diffuse under the same conditions? Posted on:
If the atomic number of an element X is 11 and that of nitrogen is 7, the most likely formula of the nitride of X is Posted on:
What is the most probable group of an element which is a soft, silvery white solid and reacts violently with water? Posted on:
How many unpaired electrons are there in an atom of an element with the following electronic configuration? Posted on:
