2.1 : BOHRS' ATOMIC MODEL

Electron moves around the nucleus in a temporary circular orbit.

The energy of the electron at a certain energy level always zero

The change of energy occur when the electron moves within an orbit.

The change of energy occur when the electron make transition between allowed energy state

1

2

3

4

2 to 4

4 to 2

2 to 3

2 to 5

−1.36x10⁻¹⁹ J

−2.18x10⁻¹⁸ J

- 2.42 x 10⁻¹⁹ J

- 3.41 x 10⁻¹⁹ J

1.283 x 10⁻⁹ m

1.283 x 10⁻⁸ m

1.283 x 10⁻⁶ m

1.283 x 10⁻⁷ m

  4.58 x 10^–19 J

  – 4.58 x 10^–19 J

   – 4.58 x 10^–18 J

4.58 x 10^–18 J

E

A

D

C

n=4 to n=1

n=5 to n=2

n=6 to n=3

n=7 to n=4

6

7

8

9

Red

Green

Blue

Violet