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Worksheets

Atomic Size & Ionization Energy

Total questions: 20

Worksheet time: 7mins

Name
Class
Date
1.

Which atom has the smallest atomic radius?

a)

K

b)

Fr

c)

Rb

d)

Cs

2.

Which of the following will have a lower ionization energy than scandium?

a)

Cr

b)

K

c)

Ni

d)

Br

3.

Which of the following will have a larger radius than Zinc?

a)

Ga

b)

Br

c)

As

d)

Ca

4.

Atoms get bigger as you move down a group on the periodic table. This is because ____________.

a)

The atoms have more mass.

b)

The atoms have more protons.

c)

The atoms have more energy levels.

d)

The atoms have more neutrons.

5.

Which atom has the largest atomic radius?

a)

O

b)

S

c)

Se

d)

Te

6.

Which atom has the smallest atomic radius?

a)

Y

b)

Ag

c)

Sr

d)

I

7.

As you move across the periodic table, atoms tend to get smaller because, ______________.

a)

the atoms have more mass.

b)

the atoms have less mass.

c)

the atoms have more protons.

d)

the atoms have fewer electrons.

8.

Which element has the highest ionization energy?

a)

Se

b)

Ga

c)

K

d)

Ti

9.

Which atom has the largest atomic radius?

a)

Y

b)

Ag

c)

Sr

d)

I

10.

Ionization energy is...

a)

the energy required to add an electron to a specific atom.

b)

how much energy it takes to remove an electron from an atom.

c)

the energy required to shield the outer electrons from the nucleus.

d)

a measure of the ability of an atom to attract electrons,

11.

Which element has the lowest ionization energy?

a)

Al

b)

Mg

c)

Cl

d)

Na

12.

The atom with the largest atomic radius in Group 18 is...

a)

Ar

b)

He

c)

Kr

d)

Rn

13.

Which element has the lowest ionization energy?

a)

K

b)

Li

c)

Na

d)

Rb

14.

Which statement correctly and completely identifies a trend?

a)

Atomic radius decreases across a period and increases down a group.

b)

Electronegativity decreases across a period and decreases down a group.

c)

Ionization energy increases across a period and increases down a group.

d)

Reactivity of metals radius increases across a period and decreases down a group.

15.

Which element has the highest ionization energy?

a)

Al

b)

Mg

c)

Cl

d)

Na

16.

Which atom has the largest atomic radius?

a)

K

b)

Fr

c)

Rb

d)

Cs

17.

Which periodic group has the smallest atomic radius?

a)

alkali metals

b)

halogens

c)

noble gases

d)

transition metals

18.

Which element has the lowest ionization energy?

a)

Mg

b)

Sr

c)

Ba

d)

Ca

19.

Atomic radii generally increase as we move...

a)

down a group and from right to left across a period.

b)

up a group and from left to right across a period.

c)

down a group and from left to right across a period.

d)

up a group and from right to left across a period.

20.

Which element has the highest ionization energy?

a)

K

b)

Li

c)

Na

d)

Rb