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  • Transition elements form binary compounds with halogens. Which of the following elements will form {MF}_{3} type compounds? (i) {Cr} (ii) {CO} (iii) {Cu} (iv) {Ni}

Transition elements form binary compounds with halogens. Which of the following elements will form \text {MF}_{3} type compounds?

(i) \text {Cr}

(ii) \text {Co}

(iii) \text {Cu}

(iv) \text {Ni}

Answers (1)

The answer is the option (i, ii). Due to higher lattice energy in \text {CoF}_{3} cobalt can form halides like \text {MF}_{3} type of compounds. On the other hand, chromium can form \text {CrF}_{6} due to higher bond enthalpy.

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