Which of the following electronic configuration would be associated with the highest magnetic moment?
$[\mathrm{Ar}] 3 \mathrm{~d}^7$
$[\mathrm{Ar}] 3 \mathrm{~d}^8$
$[\mathrm{Ar}] 3 \mathrm{~d}^3$
$[\mathrm{Ar}] 3 \mathrm{~d}^6$
Which of the following ions will exhibit colour in aqueous solutions?
Which one of the following ions is colourless
Assertion : The free gaseous $Cr$ atom has six unpaired electrons
Reason : Half-filled s orbital has greater stability.
${[Sc{({H_2}O)_6}]^{3 + }}$ ion is
The oxoanion in which the oxidation state of the central atom is same as its group number in the periodic table is