WorksheetsIonisation Energy
Total questions: 20
Worksheet time: 15mins
When across a period, the atomic size decreases so the first IE ___________.
increases
decreases
constant
i am not sure
When going down a group, the atomic size increases so the first IE __________.
increases
decreases
constant
I am not sure
Factors affecting the ionisation energy:
Atomic radius
Effective nuclear charge
Shielding effect
All of the above
The equation for the first ionisation energy of a sodium atom is:
Na (g) -> Na+ (g) + e-
Na+ (g) -> Na2+ (g) + e-
Na (s) -> Na+ (g) + e-
Na+ (g) + e- -> Na (g)
Which of the following electron configurations gives rise to the largest increase between the second and third ionisation energies?
1s2 2s2 2p2
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3s2
1s2 2s2 2p1
Which electron configuration represents an element with the highest first ionization energy?
2-1
2-2
2-8-1
2-8-2
Which element can have the following ionization energies: 250, 500, 2500, 2800?
K
Mg
O
F
Which element can have the following ionization energies: 100, 700, 900, 1000?
K
Mg
O
F
Where is there a big jump of ionization energy increase for successive ionizations of the element Silicon(Si)?
between 1 and 2
between 6 and 7
between 7 and 8
between 4 and 5
How many valence electrons does this atom have?
4
2
1
3
Which equation correctly describes the first ionization energy of X?
X --> X- + e-
X --> X+ + e-
X --> X- + e+
X + e- --> X-
X + e- --> X+
How many valence electrons does the element have?
E1 = 943
E2 = 1,950
E3 = 3,852
E4 = 5,492
E5 = 23,085
E6 = 26,791
E7 = 30,024
1
2
3
4
5
The first seven ionisation energies of element M are 786, 1577, 3229, 4356, 16080, 19790 and 23780 kJ mol-1. In the Periodic Table, element M is in group
3
2
7
4
The data below shows the values of the first to the fifth ionisation energy of element X.
Ionisation energy kJ mol-1
First 577
Second 1820
Third 2740
Fourth 11600
Fifth 14800
The configuration of valence electrons of element X is:
s2
s2 p1
s2 p3
s2 p4
In general ionization energy ____ as you go down a group,
and ____ as you go across the periodic table.
decreases, decreases
decreases, increases
increases, decreases
increases, increases
Element W would have how many valence electrons?
5
6
7
8
