Question

The following four spheres represent Be, Be2+, O and O2- (not necessarily in that order). A, r = 112 pm B, r = 27 pm C, r = 140 pm D, r = 64 pm Which pair of reactions is most consistent with the relative sizes of these species? A ? C + 2e- and D + 2e- ? B A + 2e- ? B and C ? D + 2e- A ? D + 2e- and C + 2e- ? B A ? B + 2e- and D + 2e- ? C A + 2e- ? C and D ? B + 2e-

          The following four spheres represent Be, Be2+, O and O2- (not necessarily in that order).
A, r = 112 pm
B, r = 27 pm
C, r = 140 pm
D, r = 64 pm
Which pair of reactions is most consistent with the relative sizes of these species?
A ? C + 2e- and D + 2e- ? B
A + 2e- ? B and C ? D + 2e-
A ? D + 2e- and C + 2e- ? B
A ? B + 2e- and D + 2e- ? C
A + 2e- ? C and D ? B + 2e-

The following four spheres represent Be, Be2+, O and O2- (not necessarily in that order).
A, r = 112 pm
B, r = 27 pm
C, r = 140 pm
D, r = 64 pm
Which pair of reactions is most consistent with the relative sizes of these species?
A ? C + 2e- and D + 2e- ? B
A + 2e- ? B and C ? D + 2e-
A ? D + 2e- and C + 2e- ? B
A ? B + 2e- and D + 2e- ? C
A + 2e- ? C and D ? B + 2e-

Added by Mila W.

Chemistry Principles and Reactions

William L. Masterton, Cecile N. Hurley 8th Edition

Chapter 17

Instant Answer

Solved by Expert Mahajan R

02/25/2022

Step 1

Be and Be2+ are the same element, but Be2+ has lost two electrons. Losing electrons causes an atom to become smaller because there are fewer electrons to be held by the nucleus, so the electrons are pulled in closer. Therefore, Be2+ should be smaller than Be. Show more…

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The following four spheres represent Be, Be2+, O and O2- (not necessarily in that order). Which pair of reactions is most consistent with the relative sizes of these species? A → C + 2e− and D + 2e− → B A + 2e− → B and C → D + 2e− A → D + 2e− and C + 2e− → B A → B + 2e− and D + 2e− → C A + 2e− → C and D → B + 2e−