Which of the following specie has the maximum number of unpaired electrons:
Correct answer: D. O2
- A. O2-1
- B. O2+2
- C. O2-2
- D. O2
Explanation
There are two unpaired electrons in a neutral atom of oxygen in a grounded state. Oxygen, with an atomic number of eight, will also have eight electrons if neutral. If we used an electron configuration chart, we can see that oxygen has an electron configuration of 1s2, 2s2, 2p4.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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