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6. What is the definition for empirical formula?
- The weighed average mass of an element relative to 12th mass of a carbon atom
- The simplest whole number ratio of atoms of each element present in a compound
- Gives the actual number of atoms of each element present in a compound
7. Sodium has 11 electrons. What is its electron arrangement?
- 1p6, 2s2, 3p6, 4s3
- 1s2, 2s2, 2p6, 3s1
- 1s2, 2s2, 3p6,4s1
8. What is the mass of an electron?
9. What is the ideal gas equation?
10. how many lone pairs of electrons does fluorine have in HF?
11. What is positional isomerism?
- The functional group is attached to the main chain at different points
- Different functional groups
- The hydrocarbon is arranged differently
12. What is the product of incomplete combustion of alkanes?
- Water and carbon dioxide
- Water and carbon monoxide
- Carbon monoxide
13. What is co-ordinate/ dative covalent bonding?
- Bond between two metals
- One atom provides provides both electrons in a covalent bond
- Electrostatic attraction beween ions
14. What elements must a hydrogen atom be bonded to to support hydrogen bonding?
- Nitrogen
- Bromine, Chlorine, Iodine
- Nitrogen, Oxygen, Fluorine
- Fluorine, Chlorine, Oxygen
15. Which is correct? From lowest to highest the strength of the intermolecular forces
- Hydrogen bonding, Van Der Waals, Permanent dipole - Permanent dipole
- Van Der Waals, Permanent dipole - Permanent dipole, Hydrogen bonding
- Permanent dipole - Permanent dipole, Van Der Waals, Hydrogen bonding