WorksheetsIonisation energy
Total questions: 6
Worksheet time: 3mins
Ionisation energy is:
the minimum amount of energy required to remove the outermost electron from an atom in its solid state
the maximum amount of energy required to remove the outermost electron from an atom in its gaseous state
the minimum amount of energy required to remove the outermost electron from an atom in its gaseous state
none of the above
The equation for the first ionisation energy of a sodium atom is:
Na (g) -> Na+ (g) + e-
Na+ (g) -> Na2+ (g) + e-
Na (s) -> Na+ (g) + e-
Na+ (g) + e- -> Na (g)
Which of the following has a lowest first ionisation energy?
Sodium (Na)
Magnesium (Mg)
Chlorine (Cl)
Argon (Ar)
A shorter atomic radius of atoms in the same period will result in:
A higher first ionisation energy
A lower first ionisation energy
What is the name of the smallest atom?
(a)
Which has the lower first ionisation energy between magnesium and aluminium elements and why
Magnesium because it has a lower nuclear charge and higher atomic radius
Aluminium because it has fewer protons
Magnesium because its outermost electron is removed from an orbital further from the nucleus
Aluminium because it is removed from an orbital which is higher in energy
