Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in ?

Two elements X and Y combine to form a compound XY. Under what conditions the bond formed between them will be ionic ?

Why zero group element do not form compound under ordinary conditions?

Two oxides of Nitrogen, NO and NO_(2) reacts together at 253 K and form a compound Nitrogen X.X reacts with water to yield another compound of Nitrogen Y. The shape of the anion of Y molecule is

Name a nonmetal which exists as liquid under normal conditions.

Which elements are normally not detected in an organic compound ?

Existence of an element in more than one form in the same physical state

Which of the following species does not exist under normal conditions?

Which of the following species does not exist under normal condition ?

Which one of the following species does not exist under normal conditions?

Consider following properties of the noble gases. I. They readily form compounds which are colourless. II: They generally do not form ionic compounds. III: Xenon has variable oxidation states in its compounds IV : the smaller He and Ne do not form clathrate compounds. Select correct properties.