Class 11ChemistryClassification of Elements and Periodicity in PropertiesValency and oxidation state
MediumProvide information regarding the oxidation numbers of elements present in the periodic table.
The highest oxidation number of a representative element is equal to the group number for the first two groups,and the group number minus $10$ for the other groups.
Oxidation number generally increases from left to right across a period in the periodic table.
Oxidation number generally increases from left to right across a period in the periodic table.
| $Group$ | $1$ | $2$ | $13$ | $14$ | $15$ | $16$ | $17$ |
| $Element$ | $Na$ | $Mg$ | $Al$ | $Si$ | $P$ | $S$ | $Cl$ |
| $Compound$ | $NaCl$ | $MgSO_4$ | $AlF_3$ | $SiCl_4$ | $P_4O_{10}$ | $SF_6$ | $HClO_4$ |
| $Highest \ oxidation \ state$ | $+1$ | $+2$ | $+3$ | $+4$ | $+5$ | $+6$ | $+7$ |
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