MEDIUM
Earn 100
Name the element which has the highest ionisation enthalpy value. (Neon/ Helium)
100% studentsanswered this correctly
Important Questions on Classification of Elements and Periodicity in Properties
EASY
Which element has the highest first ionization potential?
EASY
The species and contain the same number of electrons. In which order do their radii increase?
EASY
The effective nuclear charge of an element with three valence electrons is . What is the atomic number of the element?
EASY
The electronic configuration with the highest ionization enthalpy is:
MEDIUM
The ionic radii of and are respectively:
EASY
Among the element Li, N, C and Be, one with the largest atomic radius is
EASY
The first ionization enthalpies for three elements are and , respectively. The correct sequence of the element is:
MEDIUM
The element having the greatest difference between its first and second ionization energies, is
EASY
The formation of the oxide ion, , from oxygen atom requires first an exothermic and then an endothermic step as shown in below:
Thus process of formation of in gas phase is unfavourable though is isoelectronic with neon. It is due to the fact that,
EASY
The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Na + will be :
MEDIUM
Which one of the following has largest ionic radius ?
EASY
When the first electron gain enthalpy of oxygen is , its second electron gain enthalpy is:
EASY
Which of the following atoms has the highest first ionization energy?
MEDIUM
The electronegativities of and are in the order -
MEDIUM
Give a reason for the following.
Ionisation potential increases across a period, from left to right.
MEDIUM
The size of the iso-electronic species , Ar and is affected by:
MEDIUM
For the second period elements the correct increasing order of first ionization enthalpy is:
MEDIUM
Which of the following represents the correct order of increasing first ionization enthalpy for ?
EASY
The correct order of atomic radii is:
MEDIUM
In which of the following options the order of arrangement does not agree with the variation of property indicated against it?
