I am an 11th grade student who has just started learning about bonds in compounds. My question pertains to a line written in JD Lee's Concise Inorganic Chemistry for JEE (Main and Advanced) It was suggested that in all such case, a pair of electrons gets unpaired and one of the electrons is excit...

In my experience, most of the commercial products intended for removing soap scum from bathroom surfaces are ineffective. No matter how long you leave it on or how hard you scrub, the soap scum doesn't come off. The only successful way I've found is to scrub it with a stiff brush using elbow grea...