Which of the following correctly compares the radii of na and na+? a. na has a smaller radius than na+ because na has expanded its electron cloud. b. na has a larger radius than na+ because na has lost its outermost energy shell. c. na has a smaller radius than na+ because na+ has expanded its electron cloud. d. na has a larger radius than na+ because na+ has lost its outermost energy shell.

  The statement   that correctly compares  the radii  of Na and Na+ is

Na  has a larger  radius than Na+  because Na+   has  lost  its  outermost energy  shell  ( answer D)

  Explanation

sodium (Na)  is in atomic  number  11  and hence  has  1s2 2s2 2p6 3s1  or [Ne] 3s1   electron  configuration.

Sodium   metal (Na) loses    1 electron  in the  outermost shell  to  form   Na+  with 1s2 2s2 2p6  electron configuration.

Therefore  Na   has  larger atomic radius   than Na+ because      Na+   is  formed  when   1 electron is lost  by  Na atom.

 In addition the  nuclear  charge   of Na+   is greater  than that  of Na.   This  make the valence electron of Na+  to attracted  closer to the nucleus  which  make the  atomic radius of Na+ to be  smaller than that  of Na.

D. Na has a larger radius than Na+ because Na+ has lost its outermost energy shell.

Which of the following correctly compares the radii of Na and Na+? (5 points)

A. Na has a smaller radius than Na+ because Na has expanded its electron cloud.

B. Na has a larger radius than Na+ because Na has lost its outermost energy shell.

C. Na has a smaller radius than Na+ because Na+ has expanded its electron cloud.

D. Na has a larger radius than Na+ because Na+ has lost its outermost energy shell.

Explanation:

I just took the test and D. Na has a larger radius than Na+ because Na+ has lost its outermost energy shell, is the correct answer!

Good Luck!!

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?