List of top Chemistry Questions on d block elements asked in KEAM

Which pair of the following 4d series of elements has the same number of electrons in 4d subwell?

The titanium (atomic number 22) compound that does not exist is

Ammonia will not form complex with

In aqueous solution, $Cr^{2+}$ is stronger reducing agent than $Fe^{2+}$. This is because

Among the transition metals of 3d series, the one that has the highest negative $M^{2+} /M$ standard electrode potential is

Identify the product and its colour when $MnO_2$ is fused with solid $KOH$ in the presence of $O_2$

In neutral or faintly alkaline medium, thiosulphate is quantitatively oxidized by $KMnO_4$ to

In the preparation of potassium permanganate, pyrolusite $ (Mn{{O}_{2}}) $ is first converted to potassium manganate $ ({{K}_{2}}Mn{{O}_{4}}) $ . In this conversion, the oxidation state of manganese changes from:

The hardest lanthanide element is

The magnetic moment of $Ni^{2+}$ ion (At. No. of Ni. is 28) in BM unit is

Which of the following ions has the same number of unpaired electrons as those present in $V^{3+}$?

Which of the following transition metals of 3 series has the lowest melting point?

When $MnO_2$ is fused with $KOH$ and $KNO_3$, a coloured compound is formed. Choose the right compound with the appropriate colour

The acidic, basic or amphoteric nature of $Mn_2O_7, V_2O_5$ and $CrO$ are respectively

How many peroxy linkages are present in $CrO_5$ ?

Which one of the following transition metal ions shows magnetic moment of 5.92 BM?