The sum of bridging carbonyls in $W(CO)_6$ and $Mn_2(CO)_{10}$ is $............$.

What is the chemical formula of Tartar Emetic?

Which of the following are organometallic compounds? $(1)$ Grignard reagent $(2)$ Sodium methoxide $(3)$ Trimethylboron $(4)$ $Al_2(CH_3)_6$

Which of the following is a $\sigma$ and $\pi$ bonded organometallic compound?

The correct statement$(s)$ regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: $Fe = 26, Ni = 28$)
$A$. Total number of valence shell electrons at metal centre in $Fe(CO)_5$ or $Ni(CO)_4$ is $16$
$B$. These are predominantly low spin in nature
$C$. Metal-carbon bond strengthens when the oxidation state of the metal is lowered
$D$. The carbonyl $C-O$ bond weakens when the oxidation state of the metal is increased

The Ziegler-Natta catalyst is