What is called family?

What is called nomenclature of species?

What is called classification?

What is called relative atomic mass of an element?

What is called sublimation?

What is called unsaturated solution?

What is called Fajan's rule? Arrange the following compounds increasing order of their covalent characters AlF_3 , AlI_3 , AlBr_3, AlCI_3

What is a centrosome? Why is it called so?

What is dislocation defect? Why it is so called?

What is Z-scheme in light reaction of photosynthesis? Why is it called so?

Discuss the stability of various oxidation states of element of chalcogen family.