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IONISATION ENTHALPY-RECAP

Total questions: 10

Worksheet time: 8mins

Name
Class
Date
1.

The magnitude of ionization energy depends on

a)

Spin-spin repulsion

b)

Number of positive charges

c)

shielding effect increases

d)

All of the above

2.

Ionization energy between last element of one period and first element of next period receives a rapid

a)

increase

b)

decrease

c)

constancy

d)

Neutral

3.

Nuclear charge increases in periodic table

a)

Across a period

b)

Down a group

c)

d-Block

d)

s-Block

4.

The electronic configuration is evident by the successive

a)

Ionization energies

b)

Polarity

c)

Electronegativity

d)

Shielding effect

5.

The force of attraction between nucleus and electrons increases across a period because

a)

nuclear charge increases

b)

distance remains constant

c)

Shielding effect remains constant

d)

All of the above

6.

The electron configuration of elements A, B and C are [He]2s1, [Ne]3s1 and [Ar]4s1 respectively. Which one of the following order is correct for the first ionization potentials (in kJ mol–1) of A, B and C?

a)

A > B > C

b)

C > B > A

c)

B > C >A

d)

C > A > C

7.

The correct order of second ionization energies of C, N, O and F is:

a)

C > N > O > F

b)

O > N > F > C

c)

O > F > N > C

d)

F > O > N > C

8.

Which of the following species has the highest ionization potential?

a)

Li+

b)

Mg+

c)

Al+

d)

Ne

9.

The electronic configuration with the highest ionization enthalpy is _______

a)

1S1

b)

1S2

c)

2S2

d)

2S2

10.

The set representing correct order of first ionization potential is:

a)

K > Na > Li

b)

Be > Mg > Ca

c)

B > C > N

d)

Ge > Si > C