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Element Oxidation states
1) Fluorine A) $+ 8$
2) Osmium B) $+ 3, + 5$
3) Phosphorus C) $+ 4, - 4, 0$
4) Carbon D) $- 2$
5) ‘S’ in $H_{2} S$ E) $- 1$

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1 - E, 2 - C, 3 - B, 4 - A, 5 - D

1 - E, 2 - A, 3 - D, 4 - C, 5 - B

1 - E, 2 - B, 3 - C, 4 - D, 5 - A

1 - E, 2 - A, 3 - B, 4 - C, 5 - D

answer is A.

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Detailed Solution

P-block elements exhibit various oxidation states. These elements often gain or lose sufficient number of electrons in order to attain noble gas configuration.

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