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Question
Arrange the following in order of increasing ionisation energy:
Ne, He, Ar
Explain your choice.
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Solution
Ne, He, and Ar belong to group 18, and He is at the top. As ionisation energy decreases in the group, He has the highest ionisation energy.
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RELATED QUESTIONS
Choose the correct answer from the options given below:
Ionisation potential increases over a period from left to right because of the
(A) Atomic radius increases and nuclear charge increases
(B) Atomic radius decreases and nuclear charge decreases
(C) Atomic radius increases and nuclear charge decreases
(D) Atomic radius decreases and nuclear charge increases
Give one word or phrase for the following:
Formation of ions from molecules
Give a reason for the following:
Ionisation potential increases across a period, from left to right.
Define the term ‘ionisation potential`.
Arrange the elements of second and third period in increasing order of ionization energy.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing ionization potential
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).
Arrange the following as per the instruction given in the bracket:
Na, K, Cl, S, Si (increasing order of ionization energy)
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.
Give reason:
Ionisation potential of the element increases across a period from left to right.
