1. Which of these molecules doesn't have a dative bond?
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2. What is a dative covalent bond?
- A bond vunerable to nucelophilic attack
- A bond formed from the overlap of an empty orbital and a lone pair
- A bond with a large difference in electronegativity between the two atoms
- A bond where one atom donates 3 electrons
3. It doesn't conduct when solid, it has a high melting point, it is...
- an ionic lattice
- a giant ionic OR giant covalent structure
- a metallic structure
- a simple molecular structure
4. What is the most significant reason why HF has a higher boiling point than HCl?
- The H-F bond has a higher bond enthalpy than H-Cl
- Chlorine's larger number of electrons means more shielding of the nucleus therefore more repulsion between atoms in the H-Cl bond
- HF can form strong hydrogen bonds between molecules, HCl cannot
- HF is more polar so can create stronger permanent dipole-dipole forces
5. Which of these interactions is weakest?
- Covalent bond
- Hydrogen bonds
- Permanent dipole
- London Forces/induced dipoles