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प्रश्न
Elements of group 16 have lower ionization enthalpy values compared to those of group 15 elements. Explain why?
Give reason:
Group 16th elements have lower ionisation enthalpy compared to group 15th elements.
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उत्तर
Group 15 elements have extra stable, half-filled p-orbitals with outer electronic configuration (ns2 np3). Therefore, more amount of energy is required to remove an electron compared to that of the partially filled orbitals (ns2 np4) of group 16 elements of the corresponding period. Hence, elements of group 16 have lower ionization enthalpy values compared to those of group 15 elements.
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संबंधित प्रश्न
Answer the following.
The first ionization enthalpies of S, Cl, and Ar are 1000, 1256 and 1520 kJ/mol-1, respectively. Explain the observed trend.
Explain the trend in following atomic properties of group 16 elements:
Atomic radii
Answer the following.
Explain the trend in following atomic properties of group 16 elements:
Ionisation enthalpy
Explain the trend in following atomic properties of group 16 elements:
Electronegativity
In chlorous acid, oxidation state of chlorine is _______.
Which of the following group 16 element is present in copper pyrites and zinc blende?
The CORRECT order of increasing thermal stability of the hydrides of group 16 elements is:
In group 16, atomic radii ____________ down the group while atomic radii ____________ across a period.
Which of the following will have lowest value of electronegativity?
Highest negative electron gain enthalpy in halogens is possessed by ____________.
Explain the trends in the following atomic properties of group 16 elements:
Ionisation enthalpy
Polonium has the half-Life of ______.
Fluorine has higher electronegativity but less electron gain enthalpy. Explain.
Explain the trend in atomic radius of group 18 elements.
Explain the trend in the bond dissociation enthalpies of halogen molecules. Why melting and boiling points of halogens increase on moving down the group?
Discuss the trend in the following in case of groups 16, 17 and 18 elements.
Ionization enthalpy
