Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: (i) K3[CO(C2O4)3I (ii) cis-[Cr(en)2Cl2]Cl (iii) (NH4)2[CoF4] (iv) [Mn(H20)6]SO4

What can be found in the ionosphere

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n