MCQ
The number of antibonding electron pairs in $O_2^{2 - }$ molecular ion on the basis of molecular orbital theory is
- ✓$4$
- B$3$
- C$2$
- D$5$
✓
Answer
Correct option: A.
$4$
(a) $O_2^{2 - }$ consist of four antibonding electron pair
$1s$ and $2s$ have two antibonding and $2{p_x}2{p_y}$ have two antibonding electron pair.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$IUPAC$ name of (figure) is
→The structure of which of the following chloro species can be explained on the basis of $dsp^2$ hybridization ?
→Which of the following statements is correct for the spontaneous adsorption of a gas?
The number of moles of proton which can be easily given by butyne $-1$ ( $1 $ mole) is
→The disappearance of the characteristic purple colour of $KMn{O_4}$ in its reaction with an alkene is the test for unsaturation. It is known as
→Which is not obtained when metal carbides react with $H_2O$ ?
→Which one of the following set of quantum numbers is not possible for $4 p$ electron ?
→Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
→Assertion $A$ : The first ionization enthalpy for oxygen is lower than that of nitrogen.
Reason $R$ : The four electrons in $2 p$ orbitals of oxygen experience more electron-electron repulsion.
In the light of the above statements, choose the correct answer from the options given below.
$IUPAC$ name of the compound $C{H_3} - C{H_2} - C{H_2}- C{(C{H_3})_2} - C{H_3}$
→Which of the following is always a whole number