You are Here: Home >< Physics

# Frequency/Wavelength question watch

1. Hey,

I'm assuming this is Physics anyhow, would someone be able to explain how to sort this problem out.

C12-H1 bond vibrates at a wavenumber of 3270cm-1, what would be the frequency if H1 was replaced by Deuterium (H2)

Do I use this equation; F= c / wavelength or f =1/2nc√(k/u) or neither and I'm going the wrong way around it?!
2. (Original post by Heather_1)
Hey,

I'm assuming this is Physics anyhow, would someone be able to explain how to sort this problem out.

C12-H1 bond vibrates at a wavenumber of 3270cm-1, what would be the frequency if H1 was replaced by Deuterium (H2)

Do I use this equation; F= c / wavelength or f =1/2nc√(k/u) or neither and I'm going the wrong way around it?!
I'm guessing you're assuming the vibration undergoes SHM in which case where is frequency and is the reduced mass.

I think the wavenumber is given by

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: August 3, 2009
Today on TSR

### Edexcel C4 Maths Unofficial Markscheme

Find out how you've done here

### 1,934

students online now

Exam discussions

### Find your exam discussion here

Poll

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE