question_answer 90)

  Which of the following elements does not lose an electron easily? (a) Na                                    (b) F                                       (c) Mg                                   (d) Al

Answer:

                  (b) Smaller the atomic radius of an element, more difficult is lose electron. Among Na, F, Mg and Al, F has the smallest size. Also it contains 7 electrons in its valence shell and it is most electronegative element. Hence, it does not lose an electron easily rather it gains an electron easily.