# Remove electron from gaseous atom

1. Oct 13, 2008

### sami23

What wavelength of light would be required to remove an electron from a gaseous atom of tin?

Here, I used Plank's constant h as 6.62*10-34 J.s and Constant c as 3*108 m/s

Also, energy needed to remove an electron is calculated by $$\Delta$$E =hc/$$\lambda$$

I also used Broglie Eqn: $$\lambda$$ = h/mv

The mass of Sn is 118.710 g. --> 0.11871 kg What is the mass of an electron of tin?

Can I use Broglie's Eqn and state that the wavelength required is:
6.62*10-34 J.s / ((0.11871 kg)*(3*108 m/s))

=1.86*10-41 m