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Which of the following is made up of a coordinate covalent bond?

A. Sodium chloride (NaCl)

B. Ammonia (NH\(_3\))

C. Chlorine (Cl\(_2\))

D. Aluminum bromide (AlBr\(_3\))

E. Carbon monoxide (CO)

Sagot :

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To determine which of the given molecules contains a coordinate covalent bond, let’s analyze each option:

A. Sodium chloride (NaCl):
- This compound is formed by an ionic bond between sodium (Na) and chlorine (Cl).

B. Ammonia (NH₃):
- In ammonia, nitrogen (N) forms three covalent bonds with hydrogen (H) atoms. These are polar covalent bonds, but none are coordinate covalent bonds.

C. Chlorine (Cl₂):
- Chlorine forms a non-polar covalent bond between two chlorine atoms.

D. Aluminium bromide (AlBr₃):
- Aluminium bromide is an ionic compound composed of aluminium (Al) and bromine (Br).

E. Carbon monoxide (CO):
- Carbon monoxide has a unique bonding structure that includes a coordinate covalent bond. In CO, there is a triple bond consisting of two covalent bonds and one coordinate covalent bond where both electrons in the bond come from the oxygen atom.

Analyzing these molecules, the correct molecule containing a coordinate covalent bond is:

E. Carbon monoxide (CO)

Thus, the correct answer is E: carbon monoxide (CO).
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