complex, in chemistry, a substance, either an ion or an electrically neutral molecule, formed by the union of simpler substances (as compounds or ions) and held together by forces that are chemical (i.e., dependent on specific properties of particular atomic structures) rather than physical.
Table of Contents
How do you make a complex in chemistry?
What is a complex bond chemistry?
A complex ion has a metal ion at its centre with a number of other molecules or ions surrounding it. These can be considered to be attached to the central ion by co-ordinate (dative covalent) bonds. (In some cases, the bonding is actually more complicated than that.)
What complex means?
Adjective. complex, complicated, intricate, involved, knotty mean having confusingly interrelated parts. complex suggests the unavoidable result of a necessary combining and does not imply a fault or failure. a complex recipe complicated applies to what offers great difficulty in understanding, solving, or explaining.
What is a complex ion example?
A complex ion is an ion that contains one or more ligands that are attached to a central metal cation through a dative covalent bond. A ligand is a species that can form a dative covalent bond with a transition metal using its lone pair of electrons. H2O, NH3, Cl–, OH–, and CN– are examples of ligands.
How a complex ion is formed?
A complex ion forms from a metal ion and a ligand because of a Lewis acid–base interaction. The positively charged metal ion acts as a Lewis acid, and the ligand, with one or more lone pairs of electrons, acts as a Lewis base.
What is a complex molecule?
In astronomy, complex organic molecules are molecules with multiple carbon atoms such as benzene and acetic acid. These molecules have been detected in interstellar space with radio telescopes. In chemistry, “complex organic molecules” refer to polymer-like molecules such as proteins.
How do you write a complex ion?
How many types of complex are there?
Solution : There are three types of complexes:
(i) Cationic complexes: These are the complexes in which the complex ion carries a net positive charge.
Which one of the following is not a complex compound?
The answer is potassium Ferrocyanide which is not a complex compound .
How do you name a complex compound?
- Name the ligands first, in alphabetical order, then the metal atom or ion.
- The names of some common ligands are listed in Table 1.
- Greek prefixes are used to designate the number of each type of ligand in the complex ion, e.g. di-, tri- and tetra-.
What are complex ion in simple words?
Complex Ion Definition: Complex ions are ions with a central metal ion bonded to one or more molecules or ions. They are a type of coordination complex. The central ion is the coordination center, while the molecules or ions bound to it are termed complexing agents or ligands.
Which complex ion is stable?
From ligand strength, we can see that CN− is strongest ligand among all so [Fe(CN)6]3− is most stable complex ion.
When people say you have a complex?
Answer: A complex is an informal term for what happens when someone develops a belief (often an exadurated belief) that a particular situation is dangerous or embarrassing. For example, you might say, “For heaven’s sake, don’t call attention to her nose being so big! You’ll give her a complex”.
How do you use complex in a sentence?
- It was one of many complex issues.
- There should be complex interaction between those trends and currents.
- The position becomes more complex where an investigation is underway.
- It was a complex task of regenerating Docklands, because its diverse areas were enormous.
What is a person’s complex?
A complex is an underlying structure that is objectified as a theme (like power or status) by grouping clusters of emotions, memories, perceptions, and wishes in the personal unconscious; opposite of drive. Primarily a psychoanalytic term, it is found extensively in the works of Carl Jung and Sigmund Freud.
What is a complex anion?
A negatively charged complex ion is called an anionic complex. An anion is a negatively charged ion. In this case the name of the metal is modified to show that it has ended up in a negative ion. This is shown by the ending -ate. With many metals, the basic name of the metal is changed as well – sometimes drastically!
Is AgCl a complex ion?
That is, AgCl dissolves in 1.0 M KCl to produce a 1.9 × 10 −5 M solution of the AgCl 2 − complex ion. Thus we predict that AgCl has approximately the same solubility in a 1.0 M KCl solution as it does in pure water, which is 10 5 times greater than that predicted based on the common ion effect.
What are complex ions used for?
These are used to form co-ordinate bonds with the metal ion. All ligands are lone pair donors. In other words, all ligands function as Lewis bases.
Are complexes soluble?
If a complex ion has a large Kf, the formation of a complex ion can dramatically increase the solubility of sparingly soluble salts. Due to the common ion effect, we might expect a salt such as AgCl to be much less soluble in a concentrated solution of KCl than in water.
Why transition elements form complex ions?
According to this model, transition-metal ions form coordination complexes because they have empty valence-shell orbitals that can accept pairs of electrons from a Lewis base. Ligands must therefore be Lewis bases: They must contain at least one pair of nonbonding electrons that can be donated to a metal ion.
What is the most complex chemical compound?
But i-propyl cyanide is the largest and most complex organic molecule found to date – and the only one to share the branched atomic backbone of amino acids.
Which of the following is a complex substance?
The correct answer is Cellulose. Cellulose is a fibrous carbohydrate found in all plants. It is the structural component of plant cell walls.
What is an organic complex?
As we learned, organic compounds are any molecules that are composed of the element carbon. The four main groups of carbon molecules of life are the most complex organic compounds: proteins, carbohydrates, lipids, and nucleic acids. All complex organic molecules are polymers.
How do you find the complex formula?
- Identify the central metal ion.
- Identify the oxidation state on the central metal ion (shown in Roman numerals parantheses)
- Identify the ligands.
- Identify the number of ligands.
- Calculate the total charge on the ligands.
- Calculate the charge on the complex ion.