Which of the following has the largest atomic radius?
a C
b Mg
C Na
d c
e Be

trigonal pyramidal

tetrahedral

trigonal planar

bent

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.