Question

calculate the wave number of radiation due to transition of electron from 4th orbit to 2nd orbit (RH =109677cm)​

Answer 1

calculate the wave number of radiation due to transition of electron from 4th orbit to 2nd orbit (RH =109677cm).

wave number is reciprocal of wavelength.

from Rydberg's equation,

1/λ = wave number = RZ² [1/n1² - 1/n2² ]

where Z is Rydberg's constant.given, R = 109677 cm-¹ .

you didn't mention atomic no of Z.

let's assume, we have to find wave number of hydrogen atom.

for hydrogen atom, Z = 1

n1 = 2 and n2 = 4

now, wave number = 109677 × 1² [1/2² - 1/4²]

= 109677 × [1/4 - 1/16] cm-¹

= 109677 × 3/16 cm-¹

= 20,564.4375 cm-¹

Answer 2

Answer:

Explanation:

here is the answer

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