MCQ
Which of the following is incorrect $IUPAC$ naming-
  • A
    $Co(NH_3)_5NO_2]_3 [Co(NO_2)_6]_2$

    pentaamminenitrito $-N-$ cobalt $(III)$ hexanitrito $-N-$ cobaltate $(III)$

  • $H_2[OsCl_5N]$

    hydrogenhexacloridoosmate $(IV)$

  • C
    $K_2[OsCl_5N]$

    Potassium pentachloridonitridoosmate $(VI)$

  • D
    $[Cr(H_2O)_6]^{3+}$

    hexaaquachromium $(III)$ ion

Answer

Correct option: B.
$H_2[OsCl_5N]$

hydrogenhexacloridoosmate $(IV)$

b
In $K_{2} N i F_{6}$ oxidation state of nickel is +4

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