Back to CHEMICAL BONDING & MOLECULAR STRUCTURE

JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

1 Medium

1 of 1

Analyzing +4 | -1

Arrange the following species in the correct order of their stability

{C}_2, {Li}, {O}_2^{+}, {He}_2^{+}

View answer and explanation

Correct option: C

{He}_2^{+} < {Li}_2 < {C}_2 < {O}_2^{+}

The correct answer is A because the stability of a molecule is directly proportional to its bond order, and the bond orders are He2+ (0.5) < Li2 (1) < C2 (2) < O2+ (2.5).

More Questions from CHEMICAL BONDING & MOLECULAR STRUCTURE

Practice All Chapter MCQs →

The hybridization in sulphur dioxide is

\mathrm{C}{\mathrm{O}_2}

has the same geometry as:

\left( A \right)\mathrm{HgC}{\mathrm{l}_2},\left( B \right)\mathrm{N}{\mathrm{O}_2},\left( C \right)\mathrm{SnC}{\mathrm{l}_4},\left( D \right){\mathrm{C}_2}{\mathrm{H}_2}

The pair of molecules forming strongest hydrogen bonds are Paramagnetism is shown by Which statement is correct? Assertion (A) :

{BF}_3

is a weaker Lewis acid than

{BCl}_3

.

Reason (R) : The planar

{BF}_3

molecule is stabilised to a greater extent than

{BCl}_3

{B}-X \pi

-bonding.