TS EAMCET · Chemistry · Chemical Bonding and Molecular Structure

Find out the bond order in ${He}_{2}, {He}_{2}^{+}, O_{2}$ and $O_{2}^{+}$ , respectively

A $0, 0.5, 2$ and $3$
B $0.5, 0, 3$ and $2$
C $0, 0.5, 2$ and $1$
D $0, 0.5, 2$ and $2.5$

Verified Solution

Answer & Solution

Correct Answer

(D) $0, 0.5, 2$ and $2.5$

Step-by-step Solution

Detailed explanation

Bond order =bonding electrons -anti bonding electrons2 He2 bond order electronic configuration = 1s2 or 1s2 MOT configuration = σ1s2σ1s*2 BO= 2-22=0 He2+ bond order = electronic configuration = 1s2 or 1s1 MOT…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Find out the bond order in He2, He2+, O2 and O2+, respectively

Step-by-step Solution

Find out the bond order in ${He}_{2}, {He}_{2}^{+}, O_{2}$ and $O_{2}^{+}$ , respectively