Question

In uranium (Z = 92) the K absorption edge is 0.107 Å and the K_α line is 0.126 Å, and the wavelength of the L absorption edge is ______.

विकल्प

• 0.7 Å

• 1 Å

• 2 Å

• 3.2 Å

Answer 1

In uranium (Z = 92) the K absorption edge is 0.107 Å and the K_α line is 0.126 Å, and the wavelength of the L absorption edge is 0.7 Å.

Explanation:

E(K) = `(hc)/(lambda_K)`

= `12.4/0.107` = 115.9 keV

E(K_α) = E(K) - E(L)

= `(hc)/(lambda_alpha)` = 98.4 keV

E_L = E(K) – E(K_α)

= 115.4 - 98.4

E_L = 17.5 keV

`lambda_L = (hc)/(EL)`

= `(12.4 keVÅ)/(17.5keV)`

= 0.709 Å