Choose the appropriate answers: Lanthanides on reaction with

Carbon form

L n C_{2}

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Nitrogen form

L n N

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Water give

L n (O H)_{3}

and hydrogen gas

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Oxygen forms

L n O

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Solution

The correct options are
A Carbon form $L n C_{2}$
B Nitrogen form $L n N$
C Water give $L n (O H)_{3}$ and hydrogen gas
$\begin{matrix} (A) & L a n t h a n i d e s (L n) o n r e a c t i o n w i t h C a r b o n & L n + 2 C \to L n C_{2} (B) & L a n t h a n i d e s (L n) o n r e a c t i o n w i t h N i t r o g e n & L n + N \to L n N (C) & L a n t h a n i d e s (L n) o n r e a c t i o n w i t h W a t e r & 2 L n + 6 H_{2} O \to 2 L n (O H)_{3} + 3 H_{2} (D) & L a n t h a n i d e s (L n) o n r e a c t i o n w i t h O x y g e n & 2 L n + O_{2} \to 2 L n O \end{matrix}$

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