It takes #7.21 xx 10^-19\ "J"# of energy to remove an electron from an Fe atom. What is the wavelength of light that can do this?
1 Answer
Mar 31, 2018
Explanation:
de-Broglie wavelength is given as
#λ = "h"/sqrt("2mK")#
where
#"h ="# Planck’s constant#"m ="# Mass of electron#"K ="# Kinetic energy of electron