1A Н 2A 0.31 8A 7A 3A 4A БА 6A He 0,28 Be 0.96 Li 1.28 Increasing radius Ne 0,84 0.76 0.71 0.66 0.57 0,58 Mg 1.41 Na 1.66 Si P. Al Ar 1.21 1.11 1.07 |1.05 1.02 1.06 Kr 60 1.53 1.39 1.391.32 |l.26 1.24 1.32 1.22 1.22 1.20 1.19 1,20 1.20 1.16 Cr Mn Fe Co Ni Cu Zn Ga Ti Ca Sc a K 2.03 Ge As Se Br Nb Mo Tc Ru Rh Pd Sr Y. Zr 1,95 190 1.75 1.64 1.54 147 1.46 1,42 1391451.44 1 42 139 1.39 1.38 1.39 1.40 Rb Ag Cd In Sn Sb Te 2.20 Xe Radius (Å) Increasing radius Figure 7.7 Trends in bonding atomic radii for periods 1 through 5.
Which of the following statements about the bonding atomic
radii in Figure 7.7 is incorrect? (i) For a given period, the radii
of the representative elements generally decrease from left
to right across a period. (ii) The radii of the representative
elements for the n = 3 period are all larger than those of the
corresponding elements in the n = 2 period. (iii) For most
of the representative elements, the change in radius from the
n = 2 to the n = 3 period is greater than the change in radius
from n = 3 to n = 4. (iv) The radii of the transition elements
generally increase moving from left to right within a period.
(v) The large radii of the Group 1A elements are due to their
relatively small effective nuclear charges.
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