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Questions and Answers
Which trend is observed in electronegativity for main group elements down a group?
Which trend is observed in electronegativity for main group elements down a group?
- It remains constant
- It fluctuates
- It decreases (correct)
- It increases
Which type of elements generally display two oxidation states separated by 2 electrons?
Which type of elements generally display two oxidation states separated by 2 electrons?
- D-block elements
- P-block elements (correct)
- Transition metals
- Alkali metals
What is the most common oxidation state for elements towards the right of a period?
What is the most common oxidation state for elements towards the right of a period?
- +4
- +2 (correct)
- +1
- +3
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Study Notes
- Electronegativity increases across a period with increasing nuclear charge.
- Electronegativity decreases down a group for main group elements.
- Electronegativity of d-block elements increases down the group due to poor shielding.
- Transition metals have multiple oxidation states separated by a single electron.
- Most transition metal compounds have unpaired electrons and are paramagnetic.
- P-block elements generally display two oxidation states separated by 2 electrons.
- Most p-block compounds are diamagnetic.
- The maximum oxidation state for Sc-Mn corresponds to losing all 4s and 3d electrons.
- Towards the right of the period, the most common oxidation state is +2.
- This is due to the lower energy of 3d orbitals as nuclear charge increases.
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