Ge is not a the elements of group- 15...Ge is the elements of group 14...
3..Therefore, the oxidation state of Sulphur in SO2 is +4.
answer 2....Crystallization occurs in two major steps. The first is nucleation, the appearance of a crystalline phase from either a supercooled liquid or a supersaturated solvent. The second step is known as crystal growth, which is the increase in the size of particles and leads to a crystal state.
answer..1---Qualitative analysis tells 'what' is in a sample, while quantitative analysis is used to tell 'how much' is in a sample. The two types of analysis are often used together and are considered examples of analytical chemistry.
