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Why water is monodentate For a ligand to be monodentate it must have ONE lone pair of electrons Water has two yet is not bidentate Why is this?
there are two lone pairs on the oxygen of water but because of the orbital geometry, only one lone pair can have the correct orientation to make a bond and the other lone pair pointing away from the central atom, therefor water is monodentate not bidentate. and for bidentate ligands require distint lone pairs on distinct atoms.
A Ali Sudais jan
Nuclear medicine
Research Scholar
Centre for Nuclear and molecular studies
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Example of actor ligand and spectator ligand?
An example of an actor ligand is ethylenediamine in the coordination of metal ions, as it directly binds to the metal center and influences the reactivity of the complex. In contrast, an example of a spectator ligand is water in the coordination sphere of a metal complex, as it does not directly participate in the reactivity of the complex but is present as a stabilizing ligand.
Where do plants get their replacement electrons?
They are obtained from water. Photolysis of water release Electrons
Where do plants get their replacement electrons from?
Plants get their replacement electrons for photosynthesis from water molecules. During the light-dependent reactions of photosynthesis, water molecules are split to release oxygen and provide electrons for the electron transport chain.
What is a molecule of water that has become part of a hydrate called?
Then it is called a 'ligand', an ion or molecule (functional group) that binds to a central metal atom to form a coordination complex as in hydrates.
When light is absorbed by chlorophyll molecules the excited electrons leave the molecule What is the source of electrons that makes chlorophyll stable again?
The source of electrons that makes chlorophyll stable again is water. The process of photosynthesis involves the splitting of water molecules to provide electrons, which are then used to replace the electrons lost from the chlorophyll molecule during absorption of light.
Is H2O a ligand?
No, H2O (water) is not considered a ligand. Ligands are molecules or ions that are capable of donating electron pairs to a central metal atom. Water does not qualify as a ligand because it does not form coordinate covalent bonds with a metal atom.
Example of actor ligand and spectator ligand?
An example of an actor ligand is ethylenediamine in the coordination of metal ions, as it directly binds to the metal center and influences the reactivity of the complex. In contrast, an example of a spectator ligand is water in the coordination sphere of a metal complex, as it does not directly participate in the reactivity of the complex but is present as a stabilizing ligand.
What is the definition of ligand exchange?
A ligand exchange reaction is exactly what it says - a reaction in which one ligand in a complex ion is replaced by a different one. When a precipitate is formed in a solution, the solution remains a saturated solution of the compound. In other words, cations and anions of the compound remain in the solution. The cations are usually hydrated; that is, water molecules are 'ligands' and are attached to the cations by dative bonds. If some substance is added that can form even stronger bonds with the cations than water, the water molecules(or some part of them) are replaced by the new ligand, and the concentration of the hydrated ion drops. hi sammi
Where do plants get their replacement electrons?
They are obtained from water. Photolysis of water release Electrons
What are the differences between dehydrating agent and chelating agent?
A dehydrating agent is usually an acid which brings about loss of water molecule when used on an hydrated compound. A chelating agent is usually an electron donour (ligand) which forms a complex by coordinating with a metal using two or more donor groups of a single ligand.
Why is d3 orbital more stable in water than d5?
Lets first take the case of the d3 compound. The no.of orbitals in the 3d shell is 5. If three electrons occupy three orbitals then there are two free orbitals.Therefore According to Valence bond theory the six water ligands will use the two inner d orbitals the outer s and the p orbitals to form an inner orbital complex with hybrisation d2sp3. In the second case we have the d5 compund. Since there are five electrons in the d subshell the five electrons singly occupy all the five d orbitals. Here 's where the concept of the weak ligand comes in. Since water is a weak ligand it cannot force pairing of the unpaired d electrons to make room for an inner orbital complex. Thus it has to use the outer d orbital to form an outer orbital complex with hybridisation of sp3d2. Since the Inner orbital (low spin) complex is more stable than the outer orbital (high spin) complex. Thus d3 configuration is more stable than d5 configuration in aqueous medium.
Where do the supply of electrons come from in photosynthesis?
The supply of electrons in photosynthesis comes from water molecules. This process, known as photolysis, occurs in the light-dependent reactions of photosynthesis. Water molecules are broken down into oxygen, protons, and electrons, with the electrons being used to replenish the electrons lost in the photosystem II reaction center.
Why is it possible to run an electrical current through salt water and not pure water?
Pure water does not contain any electrolytes to carry electrons where as salt water contains the same to carry electrons -movement of electrons is electrical current
Electrons that chlorophyll loses to the electron transport chain are replenished by what molecules?
The electrons that chlorophyll loses to the electron transport chain are replenished by water molecules, which are split into oxygen, protons, and electrons during the light-dependent reactions of photosynthesis.
Where do the electrons needed by the water-splitting photosystem originate?
The electrons needed for water-splitting in the photosystem originate from the splitting of water molecules during the light-dependent reactions of photosynthesis. Water molecules are split into oxygen, protons, and electrons by the photosystem II enzyme, providing the electrons needed to drive the electron transport chain.
In photosynthesis the source of electrons is?
The electrons come from water. In the light dependent stage water is split into hydrogen ions (H+), electrons and oxygen. The electrons are passed on to chlorophyll, the H+ ions combine with NADP to form NADPH and the oxygen is released.
Do electrons leak like water would do?
In metals electrons are in a permanent motion.
