Chemical Bonding Set 7

Results

#1. Which of the following substances has the least ionic character in its bond?

CCl4

KCl

BeCl2

MgCl2

#2. Which of the following best describes ionization energy?

energy needed to remove the most loosely bound electron from its ground state

it decreases from left to right across a period

it increases down the periodic table

it is represented by x + e– ® x– + energy

#3. Which one of the following characteristics is not usually attributed to ionic substances

high melting point

deform when struck

crystalline in solid state

well defined three dimensional structure

#4. Which of the following bond is less polar?

B–Cl

C–Cl

H–I

C–I

#5. Which type of the orbital hybridization and geometry is used by the central atom of NH2–?

sp2 hybridization and trigonal planar

sp hybridization and tetrahedral geometry

sp2 hybridization and trigonal planar

sp3 hybridization and tetrahedral geometry

#6. Which of the following compounds has most likely been formed by covalent bonding of atoms

CaF2

MgO

SiH4

NaCl

#7. Identify the compound below which has bonds formed by an overlap of sp and p–orbitals

BF3

BeCl2

NH3

H2O

#8. The most electronegative of these group I element is

#9. The type of bonding in HBr is

ionic

polar covalent

non–polar covalent

coordinate covalent

#10. Which of the following statement is not correct

sigma bond is weaker than a pi bond

sigma bond is stronger than a pi bond

double bond is stronger than a single bond

double bond is shorter than a single bond

Finish