Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

Olympiad workbook

Exam: Olympiad workbook
Subject: NSEC
Chapter: Chemical Bonding and Molecular Structure

Olympiad workbook · NSEC · Chemical Bonding and Molecular Structure

The resonance structures of SCN^ - are given below along with the...

The resonance structures of

\mathrm{SCN}^{-}

are given below along with the

\mathrm{S}-\mathrm{C}

and

\mathrm{C}-\mathrm{N}

bond lengths

	S-C (in pm)	C-N (in pm)
SCN‾	165	117
Single bond	181	147
Double bond	155	128
Triple bond	-----	116

The resonance structures of SCN^ - are given below along with the S-C and C-N bond lengths S-C (in pm) C-N (in pm) SCN‾

Among the following, the incorrect statement/s is/ are

Options

AThe contribution from resonance structures (i) and (ii) is more important than that from structure (iii)
BThe formal charge on S in structure (iii) is zero
CThe degree of contribution of these structures is in the order: $\mathrm{i}>\mathrm{ii}>\mathrm{iii}$
DThe formal charge on N in structure (ii) is zero

Correct answer

C. The degree of contribution of these structures is in the order: $\mathrm{i}>\mathrm{ii}>\mathrm{iii}$

Step-by-step solution

No Solution

Practice Chemical Bonding and Molecular Structure on Quantrex Academy →

More from Chemical Bonding and Molecular Structure

In ammonia the bond angle is 107^ ^ ^ ∘ 48^ while in SbH_3 the bond angle is about 91^ ^… Olympiad workbook Which of the following compounds contain 3-centered 2-electron bonding? (i) [BeF_2]_ n… Olympiad workbook In the Lewis structure of ozone (O_3) , the formal charge on the central oxygen atom is Olympiad workbook HClO_4 is a stronger acid than HClO . The correct statement is Olympiad workbook The pair that is isostructural (i.e. having the same shape and hybridization) is Olympiad workbook At 25^ ^ ^ ∘ C , nitrogen exists as N_2 and phosphorous exists as P_4 because Olympiad workbook Assuming that Hund's rule is violated by the diatomic molecule B_2 , its bond order and… Olympiad workbook Iodine is a solid and sublimes at ordinary temperatures. This is because of Olympiad workbook Full Chemical Bonding and Molecular Structure list All Olympiad workbook PYQs