Answer to Question #219110 in Inorganic Chemistry for Priya

Question

Draw briefly EAN rule. Which of the following

complex follow EAN rule ?

(i) [Cr(NH₂)]+3

(ii) [PtCl]

(iii) [Ni(NH₂), 12

(iv) [Co(NO₂),

Answer 1

Effective atomic number (EAN), is the number that represents the total number of electrons surrounding the nucleus of a metal atom in a metal complex. ... The EAN rule is often referred to as the “18-electron rule” since, if one counts only valence electrons (6 for Co3+ and 2 × 6 = 12 for 6 NH3), the total number is 18.

(iv) [Co(NO₂),