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4.Chemical Bonding and Molecular Structure
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According to molecular orbital theory, which of the following is true with respect to $Li_2^ + $ and $Li_2^ - $ ?
A
$Li_2^ + $ is unstable and $Li_2^ - $ is stable
B
$Li_2^ + $ is stable and $Li_2^ - $ is unstable
C
Both are stable
D
Both are unstable
(JEE MAIN-2019)
Solution
Both $Li_2^ + $ and $Li_2^ – $ have same bond order. But the number of antibonding electrons is less $Li_2^ + $ than in $Li_2^ – $
Standard 11
Chemistry
Similar Questions
Match each of the diatomic molecules in Column $I$ with its property / properties in Column $II$.
| Column $I$ | Column $II$ |
| $(A)$ $\mathrm{B}_2$ | $(p)$ Paramagnetic |
| $(B)$ $\mathrm{N}_2$ | $(q)$ Undergoes oxidation |
| $(C)$ $\mathrm{O}_2^{-}$ | $(r)$ Undergoes reduction |
| $(D)$ $\mathrm{O}_2$ | $(s)$ Bond order $\geq 2$ |
| $(t)$ Mixing of ' $\mathrm{s}$ ' and ' $\mathrm{p}$ ' orbitals |
