In which of the following pairs molecules have bond order three and are isoelectronics
$C{N^ - }$, $CO$
$N{O^ + },\,\,C{O^ + }$
$C{N^ - }$, $O_2^ + $
$CO,$ $O_2^ + $
Correct order of bond length is
When two atomic orbitals combine they form
Which of the following molecule is paramagnetic
The bond length the species ${O_2},O_2^ + $ and $O_2^ - $ are in the order of
After understanding the assertion and reason, choose the correct option.
Assertion : In the bonding molecular orbital $(MO)$ of $H_2,$ electron density is increased between the nuclei.
Reason : The bonding $MO$ is ${\psi _A}\, + \,\,{\psi _{B,}}$ which shows destructive interference of the combining electron waves.