2sec online quiz 2

which state of the following the ionic compound conduct the electricity?

• solid state

• aqueous state

• divided it to small parts

• divided it to large parts

All the following compounds obey the octet rule , except……

• NF3

• PF3

• IF3

• SbF3

Which of the following compounds molecules contains 2 bond pairs and lone pairs of

electrons?

• NH3

• SO2

• H2S

• BF3

The number of electron lone pairs in H2O molecule equals the number of electron bond

pairs in the molecule of ….

• H2S

• CO2

• HCl

• N2

What is the stereo structure of the molecule of CHCl3?

• Angular

• planar triangle

• tetrahedron

• three –base pyramid

which of the following two molecules both have linear stereo structure?

• BF3,NH3

• H2O,SO2

• BeF2,CO2

• BF3 ,SO2

In which of the following molecules would the angle between the bonds be the highest?

• CO2

• BF3

• CCl4

• NF3

Which of the following sets of molecules is ordered descending according to the values

of the angles between the bonds in each molecule?

• CCl4> CO2>NF3>BF3

• CO2>BF3 >CCl4>NF3

• CO2>NF3>BF3>CCl4

• CCl4>BF3>CO2>NF3

Which of the following abbreviations represents a nonpolar molecule whose stereo

structure is a tetrahedron?

• AX3

• AX4

• AX2

• AX3E

In OF2 molecule , the value of the angle between the bonds is….

• 109.50

• greater than 109.50

• Less than 109.50

• 1800