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Chemistry
K2Cr2O7 on heating with aqueous NaOH gives
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Q. $K_2Cr_2O_7$ on heating with aqueous $NaOH$ gives
The d-and f-Block Elements
A
$Cr^{2-}_4$
B
$Cr\left(OH\right)_{3}$
C
$Cr_2O^{2-}_4$
D
$Cr\left(OH\right)_{2}$
Solution:
Correct answer is (a) $Cr^{2-}_4$