Single Choice

The bond order and the magnetic characteristics of $$\text {CN}^-$$ are:

A$$3,$$ diamagnetic
Correct Answer
B$$2 \dfrac{1}{2}$$, diamagnetic
C$$2 \dfrac{1}{2}$$, paramagnetic
D$$3$$, paramagnetic

Solution

$$CN^-$$ is a 14 electrons system similar to that of nitrogen molecules. As per the MOT concept, Nitrogen molecule is diamagnetic as all the electrons are paired and bond order is 3. $$B.O.=\dfrac{1}{2}[N_b-N_a]=\dfrac{1}{2}[8-2]=3$$.

SIMILAR QUESTIONS

Chemical Bonding

Which of the following does not exist?

Chemical Bonding

The bond order of $$NO$$ is $$2.5$$ while that of $$NO^{+}$$ is $$3$$. Which of the following statements is true for these two species?

Chemical Bonding

The correct order of bond dissociation energy among $$N_2,\ O_2,\ O_2^-$$ is shown in which of the following arrangements?

Chemical Bonding

Which of the following pairs have identical values of bond order?

Chemical Bonding

"$$He_2$$ does not exist since its bond-order is zero." Answer whether the above statement is true or false.

Chemical Bonding

Bond order of $$O_2, O_2^+, O_2^-$$ and $$O_2^{2-}$$ is in order________.

Chemical Bonding

Using MO theory, predict which of the following species has the shortest bond length?

Chemical Bonding

Among the following molecules/ions, $$C^{2-}_2, N^{2-}_2, O^{2-}_2, O_2$$ which one is diamagnetic and has the shortest bond length?

Chemical Bonding

Among the following, the molecule expected to be stabilized by anion formation is: $${C}_{2},{O}_{2},NO,{F}_{2}$$

Chemical Bonding

During the change of $$O_2$$ to $$O_2^-$$, the incoming electrons goes to the orbital:

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