To determine which compound contains ionic, covalent, and coordinate linkages, we will analyze the given options step by step.
### Step 1: Identify the types of bonds in NaCl
NaCl (sodium chloride) is a classic example of an ionic compound. It consists of Na⁺ (sodium ion) and Cl⁻ (chloride ion) which are held together by ionic bonds.
**Hint:** Ionic bonds are formed between metals and nonmetals through the transfer of electrons.
### Step 2: Analyze NaOH
In NaOH (sodium hydroxide), Na⁺ is again present, and OH⁻ (hydroxide ion) is a polyatomic ion. The bond between Na⁺ and OH⁻ is ionic, while the bond between O and H in OH⁻ is covalent.
**Hint:** Look for the presence of polyatomic ions to identify covalent bonds within ionic compounds.
### Step 3: Examine HCN (hydrogen cyanide)
In HCN, the bonds are as follows: H is covalently bonded to C, and C is triple-bonded to N. This compound contains only covalent bonds.
**Hint:** Covalent bonds are formed by the sharing of electrons between nonmetals.
### Step 4: Analyze HNC (hydrogen isocyanide)
In HNC, H is bonded to C, and C is bonded to N. Here, C has a lone pair that can be donated to N, forming a coordinate bond. Thus, HNC contains covalent bonds and a coordinate bond.
**Hint:** A coordinate bond occurs when one atom donates both electrons to form a bond.
### Step 5: Evaluate NaNC
In NaNC, Na⁺ is ionic, while the bond between C and N can be analyzed further. The bond between Na⁺ and NC⁻ (the cyanide ion) is ionic, while the bond between C and N involves covalent bonding, and if there is a lone pair on N, it can form a coordinate bond.
**Hint:** Look for the presence of multiple types of bonds in a compound to identify the different linkages.
### Conclusion
After analyzing the compounds, we find that NaNC contains:
- An ionic bond (Na⁺ and NC⁻)
- Covalent bonds (C and N)
- A coordinate bond (if N donates a lone pair to C)
Thus, the correct answer is **NaNC**, which contains ionic, covalent, and coordinate linkages.
### Final Answer
**NaNC contains ionic, covalent, and coordinate linkages.**
