In the solid state, which of the following carbonyls contain bridging CO groups? (Take Co2(CO)8 as the bridged solid-state form with two bridging CO.)

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3cc218

In the solid state, which of the following carbonyls contain bridging CO groups? (Take $Co X_{2} (CO) X_{8}$ as the bridged solid-state form with two bridging CO.)

Fe X_{2} (CO) X_{9}

has three bridging CO and the solid-state

Co X_{2} (CO) X_{8}

has two.

Mn X_{2} (CO) X_{10}

has only terminal CO with an Mn-Mn bond.

Ru X_{3} (CO) X_{12}

has only terminal CO. Correct: 1 and 2.