EASY
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IMPORTANT
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The chromate ion in acidic medium changes to . (write name)

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Important Questions on The d- and f-Block Elements
HARD
JEE Main/Advance
IMPORTANT
Among the ion, and , the ion is _____. (coloured, colourless)

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JEE Main/Advance
IMPORTANT
When mixture of and is gently warmed with conc. then compound is formed. What is the oxidation state of central atom of .

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JEE Main/Advance
IMPORTANT
Number of ions which gives blue colour in aqueous state:

HARD
JEE Main/Advance
IMPORTANT
Define the oxidation states of in product of the given reaction
If the oxidation state of in product and are and respectively. Then find out the value of

HARD
JEE Main/Advance
IMPORTANT
Find number of metal ion which can produce high spin and low spin octahedral complex:

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JEE Main/Advance
IMPORTANT
Which of the following form blue colour product with solution. excess of , excess of , excess of , excess of , excess of

HARD
JEE Main/Advance
IMPORTANT
Find the number of following chemical spieces which decolorize acidic solution of

EASY
JEE Main/Advance
IMPORTANT
The elements in which electrons are progressively filled in orbital are called
