Element Atomic weight Atomic radius Common ion Ionic radius Be 9 amu 0.114 nm Be2 0.034 nm Mg 24.31 amu 0.160 nm Mg2 0.078 nm Pg 207.2 amu 0.175 nm Pb2 0.120 nm Si 28 amu 0.118 nm Si4 0.040 nm O 16 amu 0.060 nm O2- 0.132 nm Which Oxide will have a structore with a cation coordination number of 8

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.