Question

Which of the following facts regarding bond order is not valid ?

A. Bond order is given by the number of bonds between the two atoms in a molecule.
B. With increase in bond order, bond enthalpy of the molecule decreases.  
C. Isoelectronic molecules and ions have identical bond orders.
D. With increase in bond order, bond length decreases.
Answer :   With increase in bond order, bond enthalpy of the molecule decreases.
Solution :
Higher the bond order, higher is the bond enthalpy.

Releted MCQ Question on
Inorganic Chemistry >> Chemical Bonding and Molecular Structure

Releted Question 1

The compound which contains both ionic and covalent bonds is

A. $$C{H_4}$$
B. $${H_2}$$
C. $$KCN$$
D. $$KCl$$
View Answer
Releted Question 2

The octet rule is not valid for the molecule

A. $$C{O_2}$$
B. $${H_2}O$$
C. $${O_2}$$
D. $$CO$$
View Answer
Releted Question 3

Element $$X$$ is strongly electropositive and element $$Y$$ is strongly electronegative. Both are univalent. The compound formed would be

A. $${X^ + }{Y^ - }$$
B. $${X^ - }{Y^{ + \,}}$$
C. $$X - Y$$
D. $$X \to Y$$
View Answer
Releted Question 4

Which of the following compounds are covalent?

A. $${H_2}$$
B. $$CaO$$
C. $$KCl$$
D. $$N{a_2}S$$
View Answer

Practice More Releted MCQ Question on
Chemical Bonding and Molecular Structure

Practice More MCQ Question on Chemistry Section

Physical ChemistrySome Basic Concepts in ChemistryStoichiometryStates of Matter Solid, Liquid and GasAtomic StructureChemical ThermodynamicsSolutionsSolid StateSurface ChemistryChemical EquilibriumIonic EquilibriumChemical KineticsRedox ReactionElectrochemistryNuclear Chemistry
Inorganic ChemistryChemical Bonding and Molecular StructureOres and MetallurgyClassification of Elements and Periodicity in PropertiesHydrogenS - Block ElementsP - Block ElementsD and F Block ElementsCo - ordination CompoundsQualitative AnalysisPreparation and Properties of CompoundsEnvironmental Chemistry
Organic ChemistryGeneral Organic ChemistryIsomerismPurification and Characterisation of Organic CompoundsHydrocarbons (Alkane, Alkene and Alkyne)Aromatic hydrocarbonElectrophilic Aromatic Substitution (Haloalkanes and Haloarenes)Alkyl and Aryl HalideReactions on BenzeneAlcohol, Phenol and EtherAldehyde and KetoneCarboxylic AcidOrganic Compounds Containing NitrogenName ReactionsPolymersBiomoleculesChemistry in Everyday LifePractical Organic Chemistry