Question

state and explain bohr's postulate

Answer 1

Answer:

Bohr's postulates:

• In an atom, electrons revolve around the nucleus in a definite circular path called as orbits or shells.Each shell has a fixed energy and these circular orbits are known as orbital shells.
• The energy levels are represented by an integer (n=1, 2, 3…) known as the quantum number. This range of quantum number starts from nucleus side with n=1 having the lowest energy level. The orbits n=1, 2, 3, 4… are assigned as K, L, M, N…. shells and when an electron attains the lowest energy level it is said to be in the ground state.
• The electrons in an atom move from a lower energy level to a higher energy level by gaining the required energy and an electron moves from a higher energy level to lower energy level by losing energy.

Answer 2

Answer:

Neil'sBohr Model of an Atom

According to Neil's Bohr Model certain postulates has been given:-

• In an atom e- are revolving around the nucleus in certain definate shell or orbits.
• Each shell or orbits has some specific energy that's why these shell are called as energy shell.
• The orbits or energy shells are designated as K,L,M,.......
• The no. of e- in a particular shell are determined by a formulae "2n²".where n=no. of shell or orbits.

Explanation:

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