Worksheet 3

High ionization potential is exhibited by

• Radio active elements

• Non metals

• metals

• Metalloids

Atoms with high value of I.E1 always have

• small atomic radius

• Large atomic radius

• Loosely bonded valence electrons

• Strongly bonded valence electrons

The first four ionization energy values of an element are 191,578,872 and 8982 K.cal . The number of chlorine atoms per molecule of the componds formed by it is

(a)  

Among the elements A,B,C and D having atomic numbers 9,10,11 and 12 respectively , the correct order of ionization energies is:

• B>A>C>D

• B>A>D>C

• A>B>C>D

• D>C>B>A

In groups from top to bottom , IP decreases due to:

• Increase in the atomic size

• Increase in the screening effect of the inner electrons

• Decrease in the screening of the inner electrons

• Decrease in the size of the atom

Which of the following has the least ionization potential

• magnesium

• calcium

• cesium

• lithium

The possible I.E values of carbon

(a)  

Ionization energy directly proportional to

• stable electronic configuration

• nuclear charge

• both 1 and 2

• none of these

The ionization potential of Be is larger than that of B beacause

• B has half filled p-orbitals

• Size of Be is larger than B

• B has more nuclear charge

• Be has filled s-orbitals

Correct order of ionization potential of coinage metals is

• Au>Cu>Ag

• Au>Ag>Cu

• Cu>Ag<Au

• Ag>Cu>Au