Bank Exams Questions

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In networking, the Open Systems Interconnection is commonly called as OSI model. It has a 7 layer architecture for the communication.

In OSI network architecture, the routing is performed by network layer which is layer number 3 with the help of intermediate routers.

Second is obtained from the first.

When atoms react they do so in order to reach the lowest energy, which is the most stable. The electrons orbitals will overlap in the way that reduces the energy the most. Orbitals of similar energy will produce the greatest stabilisation.The answer you gave isn't the whole story, it depends what species is reacting with what. The effective nuclear charge on the atom will affect the energy of the valance electrons.

Hence, the reactivity of an atom arises from the existence of unpaired electrons in the valence shell.