Transition elements exhibit variable oxidation states because they lose electrons from which of the following orbitals?
- A$ns$ and $np$
- B$(n - 1)d$ and $ns$
- C$(n - 1)d$
- D$ns$
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Transition elements exhibit variable valencies because they release electrons from the following orbits:
Medium
View SolutionIdentify the oxidation states of titanium $(Z=22)$ and copper $(Z=29)$ in their colourless compounds.
Which of the following represents the decreasing order of the second ionization enthalpy $(I.P_2)$?
Easy
View SolutionWhich pair of metal ions from the following has the same number of unpaired electrons?
Which pair of ions gives a blue colour in an aqueous state?
$V^{+4}, Ni^{+2}, Ti^{+3}, Co^{+2}, Fe^{+3}, Cu^{+2}$
$V^{+4}, Ni^{+2}, Ti^{+3}, Co^{+2}, Fe^{+3}, Cu^{+2}$
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