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A compound ion, the main source of nitrogen for plants.
One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that...
A compound of sulphur often used as a pesticide.
A compound ion formed when a water molecule releases a proton.
Environmental organisations are against the use of PVC.
Decomposition of ammonium dichromate by heating.
One of the allotropes of phosphorus.
A colourless, odourless gas, an important component of the atmosphere, indispensable to...