What minimum frequency of light is required to ionize boron?

2 Answers

• E = hv ( h = Planck's constant = 6.6 x 10^ -34J,v = frequency)

  E = 801 kJ/mol (or) 801 x 1000 J/mol

  The enrgy required for one atom = 801 x 1000 / 6.02 x 10^23

  v = E / h

  v = 801 x 1000 /6.6 x 10^ -34 x 6.02 x 10^23

  = 20.2 x 10^14 Hz

• Is light strong enough to ionize boron?

  The kind of energy you can get from light

  E=mc^2; c= velocity of light. I don't know your wavelength, but the only way you can get the frequency with the variables you have put up (energy, frequency) is to use the formula

  j = c/f (j=wavelength; f= frequency) which implies that c= j*f.

  using m as the mass of the electron= 9.11*10^-31kg, You can get your answer.

  Else,

  THERE IS NOTHING ELSE I CAN PROPOSE HERE...