question_answer

The CORRECT statements about NO  molecule and \[N{{O}^{\oplus }}\] ion is/are, respectively,

I. Bond orders are 3 and 2.5 respectively.

II. NO is paramagnetic and \[N{{O}^{\oplus }}\] ion is diamagnetic.

III. \[NO\left( g \right)\]is obtained by the reaction of dil. \[HN{{O}_{3}}\]with Zn.

IV. \[N{{O}^{\oplus }}\] is more stable than NO molecule.

A) I, II                     

B) II, III                   

C) II, IV       

D) I, IV

Correct Answer: C

Solution :

[c] Statement (I) is INCORRECT CORRECT statement: Bond order of NO and \[N{{O}^{\oplus }}\] are \[2.5\]and 3 respectively. Statement (III) is INCORRECT CORRECT statement Dil. \[HN{{O}_{3}}\] with \[Zn,\] \[Fe\] and \[Sn\]gives metal nitrates and \[{{N}_{2}}O(g)\] But dil \[HN{{O}_{3}}\]with \[Cu,\text{ }Ag,\]\[Hg\] and \[Pb\]gives \[NO(g)\]