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Question
Name the elements with highest and lowest ionization energies in the first three periods.
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Solution
Helium (He) has the highest ionization energy of all the elements, while Caesium (Cs) has the lowest ionization energy.
RELATED QUESTIONS
Define the term ‘ionisation potential`.
Represent ionisation potential in the form of an equation. In which unit it is measured?
What do you understand by successive ionization energies?
A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Ionization energy of element C is less than that of element A.
State whether the ionization potential increases or decreases on going down a group.
Supply the missing word from those in the brackets:
If an element has a low ionization energy then it is likely to be ______ (metallic/ non-metallic).
which element has the highest ionisation potential.
Rewrite the following sentence by using the correct > (greater than) or < (less than) in the blank given
The ionization potential of potassium is _______ that of sodium.
Arrange the following in order of increasing ionisation energy:
Ne, He, Ar
Explain your choice.
The element with highest ionisation potential is ______.
