Question:

Hypo is used in photography because it is

Updated On: Jul 6, 2022
  • a strong oxidising agent
  • a strong reducing agent
  • a strong complexing agent
  • None of the above
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The Correct Option is C

Solution and Explanation

Hypo or $Na_2S_2O_3$ is a complexing agent and forms soluble complex with AgBr.
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Concepts Used:

Coordination Compounds

A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.

Coordination entity:

A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.

Ligands:

A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.