question_answer

Compounds of fluorine and oxygen are called fluorides and not oxides. Assign reason.

Answer:

                This is because of higher electro negativity of fluorine (4.0) than that of oxygen (3.5). Since in writing the name of a compound the electropositive element is written first, the compounds of fluorine and oxygen are called oxy-fluorides. For example, \[{{F}_{2}}O\] is known as oxygen difluoride and not fluorine oxide.