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Questions and Answers
How do d-block elements form ions?
How do d-block elements form ions?
- Lose (n – 1) d electrons before ns electrons
- Gain ns electrons before (n – 1) d electrons
- Simultaneously lose ns and (n – 1) d electrons
- Lose ns electrons before (n – 1) d electrons (correct)
What effect do the 3d electrons have on shielding 4s electrons from nuclear charge?
What effect do the 3d electrons have on shielding 4s electrons from nuclear charge?
- Increase the nuclear charge on 4s electrons
- Shield the 4s electrons more effectively than outer shell electrons (correct)
- Shield the 4s electrons less effectively than outer shell electrons
- Have no effect on the shielding of 4s electrons
What is the general trend of atomic radii along the 3d series?
What is the general trend of atomic radii along the 3d series?
- Remain constant
- Decrease more rapidly
- Decrease less rapidly (correct)
- Increase along the series
What effect does the filling of 4f orbitals have on atomic radii?
What effect does the filling of 4f orbitals have on atomic radii?
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Why do ionization energies increase only slightly along the 3d series?
Why do ionization energies increase only slightly along the 3d series?
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In which ions are the d configurations without 4s electrons found?
In which ions are the d configurations without 4s electrons found?
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Why does the trend of increasing values of second ionization enthalpy break for Mn2+ and Fe3+?
Why does the trend of increasing values of second ionization enthalpy break for Mn2+ and Fe3+?
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What is responsible for the value of ionization enthalpy in an electronic configuration dn?
What is responsible for the value of ionization enthalpy in an electronic configuration dn?
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