A) \[{{N}_{2}}{{O}_{4}}\]
B) \[N{{H}_{3}}\]
C) \[N{{a}^{+}}\]
D) \[N{{H}_{3}}\]
Correct Answer: D
Solution :
Lanthanoids are/-block elements starting from \[C{{H}_{3}}Cl,C{{H}_{3}}Br,C{{H}_{3}}F\] to \[C{{H}_{3}}F,C{{H}_{3}}Cl,C{{H}_{3}}Br\]Elements | Atomic no. | Oxidation state |
\[C{{H}_{3}}Br,C{{H}_{3}}Cl,C{{H}_{3}}F\] | \[C{{H}_{3}}Br,C{{H}_{3}}F,C{{H}_{3}}Cl\] | \[N{{a}_{2}}O\] |
\[C-H\] | \[N{{H}_{4}}N{{O}_{3}}\] | \[N{{H}_{4}}N{{O}_{3}}\] |
\[-7.53\text{ }kJ/mol\] | \[-398.1\text{ }kJ/mol\] | \[-16.1\text{ }kJ/mol\] |
\[-602\text{ }kJ/mol\] | \[Cd(s)+2Ni{{(OH)}_{3}}(s)\xrightarrow{{}}CdO(s)\] | \[+2Ni{{(OH)}_{2}}(s)+{{H}_{2}}O(l)\] |
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