Which of the following acids exhibits oxidizing,reducing,and complex-forming properties?

$BeCl_2 + LiAlH_4 \to X + LiCl + AlCl_3$
Total number of $3c-4e^\Theta$ bonds present in the monomer form of compound $(X)$ is:

When steam is passed over red hot iron,the substances formed are

Consider the following sequence of reactions: $Na + NH_{3(g)} \to [X]$ $\xrightarrow{N_2O} [Y]$ $\xrightarrow{\text{Heat}} [Z] (\text{Gas, Pure})$. Identify $[Z]$ gas.

Hydrogen resembles in many of its properties

Which of the following statements about hydrogen is incorrect?