Transition and InnerTransition Elements - Result Question 90

####17. Which of the following compounds is metallic and ferromagnetic?

(2016 Main)

(a) $CrO _2$

(b) $VO _2$

(c) $MnO _2$

(d) $TiO _2$

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Solution:

  1. Only three elements iron $(Fe)$, cobalt $(Co)$ and nickel $(Ni)$ show ferromagnetism at room temperature. $CrO _2$ is also a metallic and ferromagnetic compound which is used to make magnetic tapes for cassette recorders.


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