Question

The correct $IUPAC$ name of the following compound is $[Cr(NH_{3})_{5}(NCS)] [ZnCl_{4}]$

• A. pentaammineisothiocyanatochromium (III) tetrachlorozincate (II)
• B. pentammineisothiocyanatezinc chloridechromate (III)
• C. pentaammineisothiocyanatochromate (II)
• D. isothiocyanatopentaamminechromium (II) zinc chloride (IV)

Answer 1

Answer: (A)

$\left[ Cr \left[ NH _{3}\right]_{5}( NCS )\right]\left[ ZnCl _{4}\right]$
$\left[ ZnCl _{4}\right]^{2-} \Rightarrow $ Tetrachlorozincate
$\left[ NH _{3}\right]_{5}=$ Pentaammine
$( NCS )=$ Isothiocyanato
IUPAC name is:
Pentaammine isothiocyanato chromium (III) tetrachloro zincate.