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1. ⇒ (MHT CET 2021 20th September Evening Shift )

What are the formulae of the compounds formed when lanthanoids (Ln) react with nitrogen and halogen respectively?

A. $LnN$ and ${LnX}_{3}$

B. ${LnN}_{3}$ and $LnX$

C. $(Ln)_{2} N_{3}$ and ${LnX}_{2}$

D. $LnN$ and $LnX$

Correct Option is (A)

Lanthanoids react with nitrogen and halogens to give nitrides and halides of the formulae LnN and LnX $_{3}$ respectively.

⇒Transition and Inner Transition Elements