Question

The valency of $Cr$ in the complex $[Cr(H{{{}_{2}O)}_{4}C{l}_2]}^{+}$ is

• A. 1
• B. 3
• C. 5
• D. 6

Answer 1

Answer: (B)

In ${\left[Cr{\left(H_{2}O\right)}_{4}C{l}_2\right]}^{+},$ the valency of $Cr$ is

$x+4\times 0+2\times (-1)=+1$

or $x-2=+1$ or $x=3$