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Use electronegativity values (Mathematical Tables p 46) to predict the type of bond expected between hydrogen and sulfur. - Leaving Cert Chemistry - Question (b) - 2007
Question (b)
Use electronegativity values (Mathematical Tables p 46) to predict the type of bond expected between hydrogen and sulfur.
Worked Solution & Example Answer:Use electronegativity values (Mathematical Tables p 46) to predict the type of bond expected between hydrogen and sulfur. - Leaving Cert Chemistry - Question (b) - 2007
Step 1
Calculate Electronegativity Difference
Answer
To determine the type of bond between hydrogen (H) and sulfur (S), we first need to find their electronegativity values. According to the electronegativity scales:
- Electronegativity of Hydrogen (H) = 2.20
- Electronegativity of Sulfur (S) = 2.58
The difference in electronegativity (ΔEN) is calculated as:
Step 2
Predict Bond Type
Answer
Based on the calculated ΔEN value of 0.38, we can classify the bond between hydrogen and sulfur. Generally:
- A bond is considered non-polar covalent if ΔEN < 0.4,
- Weakly polar covalent if 0.4 ≤ ΔEN < 1.7,
- Polar covalent if ΔEN > 1.7.
Since our ΔEN is 0.38, we conclude that the bond between hydrogen and sulfur is weakly polar or almost non-polar covalent.