Question

168. Wave number of yellow radiation having
wavelength 5800 Å is __cm
(1) 5.172 x1014 (2) 1.724x104
(3) 5.172 x1010 (4) 1.72x1010​

Answer 1

Answer:

Option 2 Is your answer.

Explanation:

To find wave number we use this formula:

V = 1/lambda.

so,1/5800 ×10^-10.(1 Angstrom=10^-10).

= 1.72×10^-14(accurately) or 1.72 ×10^4

Hope it helps.