d - block and f - block Elements
In the dichromatie anion.
DoubtBuddy
Single Choice
The ionic charges on chromate ion and dichromate ion respectively is:
A$$-2, -2$$
Correct Answer
B$$-3, -2$$
C$$-2, -4$$
D$$-4, -2$$
Solution
Chromate salts contain the chromate anion, $$CrO_4^{2−}$$ with -2 ionic charge.
Dichromate salts contain the dichromate anion, $$Cr_2O_7^{2-}$$ with -2 ionic charge.
They are oxoanions of chromium in the +6 oxidation state.
SIMILAR QUESTIONS
d - block and f - block Elements
Zinc chromate and lead chromate are used as:
d - block and f - block Elements
In the dichromate dianoin:
d - block and f - block Elements
The sum of the total number of bonds between chromium and oxygen atoms in chromate and dichromate ions is ________.
d - block and f - block Elements
Chrome yellow is chemically known as
d - block and f - block Elements
Orange colour of $$Cr_{2}O_{7}^{2-}$$ ion changes to yellow when treated with an alkali. Why?
d - block and f - block Elements
How do you prepare: $$Na_{2}Cr_{2}O_{7}$$ from $$Na_{2}CrO_{4}$$?
d - block and f - block Elements
Account for: $$Cr^{2+}$$ is a strong reducing agent.
d - block and f - block Elements
Draw the structures of chromate and dichromate ions.
d - block and f - block Elements
On heating chromite $$(FeCr_2O_4)$$ with $$Na_2CO_3$$ in air, the following product is obtained:
Contact Details
- community@doubtbuddy.in
- M3M Cosmopolitian, Sector 66, Golf Course Extension Road, Gurgaon
- Policy Terms