1. What is the fourth ionisation enthalpy?
- X3+(g) --> X4+(g) + e-
- X(g) --> 4X+(g) + e-
- X4+(g) --> X4+(g) + e-
- X(g) --> X4+(g) + e-
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Other questions in this quiz
2. What is the first ionisation enthalpy?
- The energy needed to remove one electron from one mole of atoms of an element.
- The energy required to remove one electron from each of the electron shells of one gaseous atoms of an element
- The energy needed to remove one electron from each of one mole of isolated gaseous atoms of an element.
- The energy needed to remove one electron shell from each of one mole of isolated gaseous atoms of an element
3. If an oxidation state decreases, the compound is...
4. What is a nucleophile?
- They donate the electrons in their outer shell to other ions
- They have one of more lone pairs of electrons that they can donate to form new bonds.
- React with halogens
- They have only one lone pair of electrons
5. How many orbitals and electrons can a d sub-shell hold?
- 2 oribitals, 2 electrons
- 5 orbitals, 10 electrons
- 3 orbitals, 6 electrons
- 10 orbitals, 5 electrons