The energy required to ionize doubly ionized Li (Z = 3) is:

  1. 13.6 eV
  2. 27.4 eV
  3. 54.4 eV
  4. 108.8 eV
  5. 122.4 eV


Helping Concept:

The energy required to ionize doubly ionized Li (Z = 3) is 122.4 eV.

Doubly ionized Lithium:

Lithium is a hydrogen-like atom with atomic number Z = 3

Ionization Energy of Hydrogen-like Atoms:

En = 13.6 eV (Z2/n2)

En = energy of the nth orbit

n = principal quantum number

Z = atomic number

Given Data:

n = 1

Z = 3

Solution:

E1 = 13.6 eV (32/12) = 13.6 × 9 eV

⇒ E = 122.4 eV

References:

Wikipedia

Related Questions:

Leave a Reply

Your email address will not be published. Required fields are marked *