Skip to main content

New answers tagged

0 votes

Understanding (PuCl6)2-

First off, the concept of hybridization is not really accurate for transition metals. Second, the "$d^2sp^3$" model was likely invented to account for $d$-block elements (and less creditably,...
Oscar Lanzi's user avatar
1 vote

Crystal Field Theory, in a tetrahedral complex, why would $d_{z^2}$ and $d_{x^2-y^2}$ be degenerated ? In terms of counting of repulsion

Imagine there are two tetrahedra. One is the actual one, and the other is inverted through the center to complete a cube. The $d_{x^2-y^2}$ and $d_{z^2}$ orbitals go through the face centers and tend ...
Oscar Lanzi's user avatar
1 vote

What is the optical activity of EDTA-Zinc(II) ion?

EDTA is not chiral, but its arrangement makes the complex chiral by creating a stereocenter around the zinc. To get the coordination geometry shown the $\ce{CH2CO2^-}$ groups are on opposite sides of ...
Oscar Lanzi's user avatar
0 votes

Why the colour of complexes is the complement of light absorbed?

Apparently, you are mixing two independent phenomena ; 1) Absorption of light by any colored substance, 2) Emission of light by luminous substances. Your first paragraphe describes how light is ...
Maurice's user avatar
  • 29.2k
1 vote

Why the colour of complexes is the complement of light absorbed?

Your question is not specific to chemical d-complexes. Energy due photonic excitation is in general usually dissipated by non radiative means (aside of thermal radiation). The topic is covered by ...
Poutnik's user avatar
  • 42.7k
1 vote

Why does an atom become positively charged when it shares its lone pair?

To start with the last comment. No the formal charge of the nitrogen wil not be $+2$, as the $2$ electrons (from the lone pair) are not 'given' to the hydrogen. The nitrogen still has "$1$" ...
joerivan's user avatar

Top 50 recent answers are included