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An introduction to the chemistry of transition metal

The table shows the possible oxidation states of five d block elements in the periodic table. (The elements are represented by letters which are not their symbols.)
Q _ 2 3 4 _ _ _ _
R 1 2 3 4 5 _ _ _
S _ _ 3 4 5 6 _ _
T _ 2 _ 4 5 6 7 _
Which of the following ions is likely to exist?
A. SO4 ^1-
B. QO3 ^1 -
C. RO4 ^ 2-
D. TO2 ^2

(edited 6 years ago)

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charco

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Original post by nushkanne_00

The table shows the possible oxidation states of five d block elements in the periodic table. (The elements are represented by letters which are not their symbols.)Q _ 2 3 4 _ _ _ _ R 1 2 3 4 5 _ _ _S _ _ 3 4 5 6 _ _T _ 2 _ 4 5 6 7 _Which of the following ions is likely to exist?A. SO4 ^1-B. QO3 ^1 -C. RO4 ^ 2-D. TO2 ^2