Question
Question: A coordinate covalent bond is represented by an arrow from donor to acceptor. (A) TRUE (B) FALSE...
A coordinate covalent bond is represented by an arrow from donor to acceptor.
(A) TRUE
(B) FALSE
Solution
A covalent bond is sharing of electrons pairs with atoms. These are also known as shared pairs, which are stable as they balance attractive and repulsive forces between atoms. A coordinate covalent bond is also known as dative bond.
Complete step by step solution:
Coordinate bond is known as the bond formed between the acceptor and the donor atoms. A coordinate covalent bond is also called a dipolar bond. A coordinate bond is shown by an arrow starting from the donor and ending in the acceptor atom.
For example,
R3N→O
The arrow represents that the electrons bond starts from R3N .i.e. amine. In a covalent bond each atom shares one electron. Amine gives one electron to O atom which is used by the unpaired electrons present on the nitrogen atom forming a covalent bond.
Hence the answer to the question is true; a coordinate covalent bond is represented by an arrow from donor to acceptor.
Additional Information:
Every arrow used in a chemical equation represents and has a meaning.
For examples,
Forward arrow also known as “reaction arrow”
The resonance arrow
The equilibrium arrow
The Retrosynthesis Arrow etc
Note:
Covalent bonding also has many interactions; it includes σ−bonding, π−bonding,metal−to−metal bonding,three−center two−electron bonds etc. An example of coordinate covalent bond is seen between molecules of ammonia, which is a lone pair also called as lewis base on the nitrogen atom, and Boron trifluoride (lewis acid having incomplete octet) After, the product formation boron attains complete octet.