In which of the following coordinate compounds the central metal atom obeys the EAN rule.

In which of the following coordinate compounds the central metal atom obeys the EAN rule.
  1. $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}ight]$
  2. $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}ight]$
  3. $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}ight)_{4}ight] \mathrm{SO}_{4}$
  4. All of these

Solution

$\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}ight]$ obeys the EAN rule. ~

Asked in: JEE-TOPICTESTS-CHEMISTRY

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