Give a long answer to the question given below.
 
i. State two important postulates of Bohr's model of an atom.
ii. Write the electronic configuration of \(X_{8}\). Identify its valency and classify it as metal or a non-metal.
 
i. In an atom, revolve around the nucleus in a definite circular path called orbits or shells. These orbits or shells are called energy levels. These are represented by the letters or the numbers (\(n\) = \(1\), \(2\), \(3\), \(4\))
ii. The electronic configuration of X is .
Valency of \(X\) is
 \(X\) is a .