Please help me in this. Either you can answer the first or the second question.
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Answer: ( both answers are given )
Postulates of bohr model of atom:
1)In an atom, electrons (negatively charged) revolve around the positively charged nucleus in a definite circular path called orbits or shells.
2)Each orbit or shell has a fixed energy and these circular orbits are known as orbital shells.
3)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.
4)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 one
Structure and electronic configuration:
N - 1s2 2s2 2p1
Mg- 1s 2 2s2 2p6 3s2
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Explanation:
