Question

what is gram atom? why the concept of gram atom is usefull in chemistry?

Answer 1

Answer:

In chemistry It is specially important because chemical reaction is the combination or separation of atoms. we concern with individual atom. The mass of single atom is so less that we cannot determine by ordinary method. There for we take the atoms present in one gram atoms (mole) of an element

Answer 2

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The term gram-atom (abbreviated gat.) has been used for a related but distinct concept, namely a quantity of a substance that contains Avogadro's number of atoms, whether isolated or combined in molecules. Thus, for example, 1 mole of MgB2 is 1 gram-molecule of MgB2 but 3 gram-atoms of MgB2.