MCQ
Oxidation number of cobalt in $K[Co{(CO)_4}]$ is
- A$+1$
- B$+3$
- ✓$-1$
- D$-3$
✓
Answer
Correct option: C.
$-1$
c
(c)$K[\mathop C\limits^ * o{(CO)_4}]$
(c)$K[\mathop C\limits^ * o{(CO)_4}]$
$1 + x + 0 = 0;\,\,x = - 1$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Alcoholic solution of $KOH$ is used for
→The most important buffer in the blood consists of
The photoelectric effect occurs only when the incident light has more frequency than a certain minium:
The quantity which changes with temperature is:
The hydrogen electrode is dipped in a solution of $pH = 3$ at ${25\,^o}C$. The potential of the cell would be ............. $\mathrm{V}$ (the value of $2.303\,RT/F$ is $0.059\,V$)
→Major product is :
Graphite is used as dry lubricant because of its
The major product of the following reaction is
→$C{H_3} - CH = C{H_2} + HBr\xrightarrow{{{{({C_6}{H_5}CO)}_2}{O_2}}}$
Which quantum number will determine the shape of the subshell
What should be the weight and moles of $AgCl$ precipitate obtained on adding $500\,ml$ of $0.20\, M$ $HCl$ in $30\, g$ of $AgN{O_3}$ solution? ($AgN{O_3}= 170$)
→