`NH_4 CN` contans

Options

A. Ionic bond
B. Covalent bond
C. Dative bond
D. All

Answer

To determine the types of bonds present in the compound \( NH_4CN \), we can analyze its structure and the nature of the bonds formed between its constituent ions.

### Step 1: Identify the ions in \( NH_4CN \)
The compound \( NH_4CN \) consists of two parts:
- \( NH_4^+ \) (ammonium ion)
- \( CN^- \) (cyanide ion)

### Step 2: Analyze the ammonium ion \( NH_4^+ \)
The ammonium ion \( NH_4^+ \) is formed when ammonia (\( NH_3 \)) accepts a proton (\( H^+ \)). The structure of \( NH_4^+ \) can be described as:
- Nitrogen (N) is bonded to four hydrogen (H) atoms.
- Three of these bonds are typical covalent bonds formed by sharing electrons.
- The bond between nitrogen and the additional hydrogen (from the proton) is a coordinate bond (also known as a dative bond) where nitrogen donates a lone pair to form the bond.

### Step 3: Analyze the cyanide ion \( CN^- \)
The cyanide ion \( CN^- \) consists of:
- A carbon (C) atom triple-bonded to a nitrogen (N) atom.
- This triple bond consists of three shared pairs of electrons, which are covalent bonds.

### Step 4: Determine the type of bond between \( NH_4^+ \) and \( CN^- \)
In the compound \( NH_4CN \):
- \( NH_4^+ \) acts as a cation and \( CN^- \) acts as an anion.
- The bond between these two ions is an ionic bond, which is formed due to the electrostatic attraction between the positively charged ammonium ion and the negatively charged cyanide ion.

### Step 5: Conclusion
In summary, \( NH_4CN \) contains:
- Covalent bonds within the \( NH_4^+ \) ion (3 covalent bonds and 1 coordinate bond).
- Covalent bonds within the \( CN^- \) ion (3 covalent bonds).
- An ionic bond between \( NH_4^+ \) and \( CN^- \).

Thus, \( NH_4CN \) contains ionic bonds, covalent bonds, and dative bonds.

### Final Answer
**\( NH_4CN \) contains all of these types of bonds: ionic bond, covalent bond, and dative bond.**

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