Question

Q.SnCl2
is white but SnI2
is red explain.​

Answer 1

Answer:

Find Similar Structures

Chemical Safety:

Laboratory Chemical Safety Summary (LCSS) Datasheet

Molecular Formula: SnCl2 or Cl2SnSyno

Stannous chloride, solid appears as crystalline mass or flaky solid with a fatty appearance. Density 3.95 g / cm3. Melting point 247 ° C. Burns, but may be difficult to ignite. Toxic by ingestion. Irritates skin and eyes. Used in the manufacture of dyes, pharmaceuticals and as a tanning agent.

CAMEO Chemicals

Source: CAMEO Chemicals

Record Name: STANNOUS CHLORIDE,

Answer 2

$\huge \: \red \star \: { \large \pink { \underline\mathcal{ANSWER}} } \: \red\star \: </p><p></p><p> \:$

• we know colour in both compoumds is due to " charge transfer " . but our question is that why colour is different .
• In molecular orbital theory, as the covalent character increases the homo-lumo gap decreases, and the excitation happens more easily. Thus the colour intensity increase.

$\\ \\ \small{ \red{colour \: intensity \: \propto \: covalent \: \: character \propto \: }} \\ \\ \:$

• in sni2 charge transfer from I->Sn
• inSncl2 charge transfer from Cl->Sn
• iodide ion has large size then chloride ion and hence large Polarisability and large covalent character and hence large intensity.

this is my explanation

hope it helps