On the lab bench there are four solutions; one is yellow and the other three are colorless. Which of the following four transition metal compounds is likely the yellow solution? On the lab bench there are four solutions; one is yellow and the other three are colorless. Which of the following four transition metal compounds is likely the yellow solution? Why?

[Cr(NH3)6]Cl3

K[V(C2O4)3]

[Ti(H2O)6]Cl4

[Zn(en)2]Br2

[Cr(NH₃)₆]Cl₃

Explanation:

The transition metal compound most likely to form a yellow solution is the complex of [Cr(NH₃)₆]Cl₃,

Transition metals belongs to the d-block on the periodic table. They are made up of atoms whose d-subshell are partially or fully filled.

Most these elements have variable oxidation states and exhibits colored properties. They display a wide range of colors .

[Cr(NH₃)₆]Cl₃ is a complex that absorbs other wavelength of light but reflects yellow light making it visibly yellow.

The colors originates from the transition of electrons through electronic orbitals and thereby giving off corresponding light that we visibly observe.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

the answer is 75.0%.