Periodic Classification of Elements
The third ionization enthalpy is minimum for :
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Single Choice
The maximum ionisation enthalpy in a period is shown by:
Aalkali metals
Binert gases
Correct Answer
Crepresentative elements
Dhalogens
Solution
Answer B.
The highest ionization potential in a period is shown by Noble gases because an electron is to be removed from completely filled orbital. This breaks the stable electronic configuration $$ns^2np^6$$ and requires a large amount of energy.
Ionization energy is the amount of energy required to remove the most loosely bound electron from the atom. Noble gases are present to the extreme right in the periodic table and they have a stable configuration with complete octet so they have the highest ionization potential for loss or gain of an electron.
SIMILAR QUESTIONS
Periodic Classification of Elements
The first ionization energy (in kJ/mol) of Na, Mg, Al and Si respectively, are:
Periodic Classification of Elements
Which of the following represents the correct order of increasing first ionization enthalpy for $$Ca$$, $$Ba$$, $$S$$, $$Se$$ and $$Ar$$?
Periodic Classification of Elements
In which of the following options the order of arrangement does not goes with the variation of property indicated against it?
Periodic Classification of Elements
Compare the alkali metals and alkaline earth metals with respect to (i) ionisation enthalpy (ii) basicity of oxides and (iii) solubility of hydroxides.
Periodic Classification of Elements
In the periodic table, the maximum chemical reactivity is at the extreme left (alkali metals) and extreme right (halogens). Which properties of these two groups are responsible for this?
Periodic Classification of Elements
The element having very high ionization enthalpy but zero electron gain enthalpy is :
Periodic Classification of Elements
The first ionisation potential of $$Na, Mg, Al$$ and $$Si$$ are in the order:
Periodic Classification of Elements
In which of the following transformation least energy is required?
Periodic Classification of Elements
Which of the following electronic configuration is associated with the biggest jump between the second and third ionization energies?
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