8. Calculate, with four valid digits and in the unit cm-1, the rotation constant B for the molecules

a) 12C1H

b) 127I2,

given that m (12C) = 12,000 u; m (1H) = 1.078 h; r (CH) = 1.1199 ; m (127I) = 126.9 u and r (I2) = 2.6663 .

Convert these B-values to the GHz unit.

1. a) 4334; b) 11,20

2. a) 1,9362 x 10^-47; b) 7,4902 x 10^-45

3. a) 433,4; b) 1,120

4. a) 14,46; b) 0,03737

Choose one of number 1 -4