The colour of the compounds of transition metals may be attributed to the presence of incomplete (n-1) d sunshell. When an electron from a lower energy of d-orbital is excited to a higher energy d-orbital, the energy of excitation corresponds to the frequency of light absorbed. This frequency generally lies in the visible region. The colour observed. The frequency to complementary colour of the light absorbed. The frequency of the light absorbed is determined by the nature of the ligand. Paramagnetism is a property due to the presence of unpaired electrons. Paramagnetism increases with increase in number of unpaired electrons. Magnetism moment is calculated from the formula μ=√n(n+2) BM The colourless species is

Question

The colour of the compounds of transition metals may be attributed to the presence of incomplete (n-1) d sunshell. When an electron from a lower energy of d-orbital is excited to a higher energy d-orbital, the energy of excitation corresponds to the frequency of light absorbed. This frequency generally lies in the visible region. The colour observed. The frequency to complementary colour of the light absorbed. The frequency of the light absorbed is determined by the nature of the ligand. Paramagnetism is a property due to the presence of unpaired electrons. Paramagnetism increases with increase in number of unpaired electrons. Magnetism moment is calculated from the formula μ=√n(n+2) BM The colourless species is (A) Na 3 VO 4 (B) VCl 3 (C) VOSO 4 (D) VH 3

Tardigrade Admin · Accepted Answer

Na 3 VO 4 contains V in +5 oxidation state, which has all d-orbitals vacant and thus, colourless

$N a_{3} V O_{4}$

$V C l_{3}$

$V OS O_{4}$

$V H_{3}$

$N a_{3} V O_{4}$ contains $V$ in $+ 5$ oxidation state, which has all $d$ -orbitals vacant and thus, colourless

Na3​VO4​

VCl3​

VOSO4​

VH3​

Na3​VO4​ contains V in +5 oxidation state, which has all d-orbitals vacant and thus, colourless

$N a_{3} V O_{4}$

$V C l_{3}$

$V OS O_{4}$

$V H_{3}$

$N a_{3} V O_{4}$ contains $V$ in $+ 5$ oxidation state, which has all $d$ -orbitals vacant and thus, colourless