1.

Four diatomic species are listed below in different sequences. Which of these represents the correct order of their increasing bond order-

Answer»

`C_(2)^(2-) LT He_(2)^(+)lt NO lt O_(2)^(-)`
`He_(2)^(+) lt O_(2)^(2-) lt NO lt C_(2)^(2-)`
`O_(2)^(-) lt NO lt C_(2)^(2-) lt He_(2)^(+)`
`NO lt C_(2)^(2-) lt O_(2)^- lt He_(2)^(+)`

ANSWER :B


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