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Worksheets

Periodic Trends

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.
The atom with the largest atomic radius in Group 18 is - 
a)
Ar
b)
He
c)
Kr
d)
Rn
2.
As you move down a group, atomic radius increases because - 
a)
you add more and more neutrons
b)
you add more and more protons
c)
you add more and more shells (energy levels)
d)
you add more atomic mass
3.
The atom with the largest atomic radius in Period 4 (row 4) is - 
a)
K
b)
Kr
c)
Fe
d)
Fe
4.
Francium (Fr) has the lowest ionization energy in Group 1 because - 
a)
it has the smallest number of valence electrons
b)
it has the greatest atomic mass
c)
it has the greatest number of protons, so it attracts its electrons the strongest
d)
its 1 valence electron is very far from the nucleus, so little energy is needed to remove it
5.
The element with the smallest ionization energy in Period 6 is - 
a)
Rn
b)
Cs
c)
Os
d)
Tm
6.

Of the halogens, which has the smallest radius?

a)

F

b)

Br

c)

He

d)

At

7.

Which of the following will have a higher electronegativity than arsenic (As)?

a)

Carbon (C)

b)

Neon (Ne)

c)

Antimony (Sb)

d)

Germanium (Ge)

8.

What is one-half the distance between the nuclei of identical atoms that are bonded together?

a)

atomic radius

b)

atomic diameter

c)

atomic width

d)

atomic length

9.

What is the amount of energy required to remove an electron from an atom?

a)

atomic energy

b)

ionization energy

c)

ionic energy

d)

electron energy

10.

What is a positively-charged ion which forms when an atom loses electrons?

a)

atom

b)

ion

c)

cation

d)

anion

11.

What is a measure of the tendency of an atom to attract a bonding pair of electrons when the atom is in a compound?

a)

ionization energy

b)

electropositivity

c)

electronegativity

d)

electron energy

12.

What is a negatively-charged ion which forms when an atom gains electrons?

a)

cation

b)

anion

c)

electron

d)

ion

13.

What is a vertical (up and down) column in the periodic table?

a)

group or family

b)

period

c)

periodic law

d)

octet rule

14.

Vertical columns of elements (families) on the periodic table with similar properties

a)

period

b)

row

c)

groups

d)

quadrants

15.

If a potassium atom lost one electron, it becomes an ion. What would be the symbol for that ion?

a)

b)

c)

d)

16.
Families all have similar 
a)
Names
b)
atomic numbers
c)
atomic masses
d)
properties
17.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
a)
decreases, increases 
b)
increases, increases
c)
increases, decreases 
d)
stays the same, increases
18.

Select all the nonmetals (choose all that apply)

a)

H

b)

P

c)

In

d)

Na

19.

Which is true regarding the element in period 2, group 8?

a)

small atomic radius, low electronegativity, low ionization energy

b)

small atomic radius, no electronegativity, high ionization energy

c)

small atomic radius, high electronegativity, high ionization energy

d)

large atomic radius, low electronegativity, high ionization energy

20.

Which atom is larger?

a)

Fe+2

b)

Fe+3

c)

Fe

21.

Which atom is larger?

a)

N-3

b)

N

c)

N-2

22.

Which atom is larger?

a)

Ca+2

b)

Ca

c)

Ca+1

23.

Which atom is larger?

a)

P-2

b)

P-1

c)

P

24.
Atoms that have a high electronegativity, _______________.
a)
give up their electrons more easily.
b)
hold on to their electrons more tightly.
c)
have more electron shells.
25.

Which list of elements from group 2 on the periodic table is arranged in order of increasing atomic radius?

a)

Be, Mg, Ca

b)

Ca, Mg, Be

c)

Ba, Ra, Sr

d)

Sr, Ra, Ba

26.
Which of the following will have a larger radius than Zinc?
a)
Gallium
b)
Aluminum
c)
Magnesium
d)
Strontium
27.
Which of the following will have a lower ionization energy than Scandium (Sc)?
a)
Helium (He)
b)
Titanium (Ti)
c)
Calcium (Ca)
d)
Magnesium (Mg)
28.

The common charge on an atom in group 17 would be....

a)

+1

b)

+7

c)

-7

d)

-1

e)

17

29.
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 less electrons.
30.
As atoms of elements in group 16 are considered in order from top to bottom, the electronegativity of each successive element....
a)
decreases
b)
increases
c)
remains the same
d)
none of the above
31.
Which of these elements has the highest ionization energy?
a)
Lithium (Li)
b)
Potassium (K)
c)
Francium (Fr)
d)
Sodium (Na)
32.
Which group has the greatest number of valence electrons?
a)
1
b)
14
c)
18
d)
16
33.

When atom loses an electron, the size will

a)

be greater

b)

increase

c)

have no change

d)

be smaller

34.

When atom gains an electron, the size will

a)

increase

b)

decrease

c)

have no change

d)

smaller

35.

The ability to attract an electron in a chemical bond

a)

electronegativity

b)

electron affinity

c)

metallic character

d)

ionization energy

36.

Which atom has the smallest metallic character?

a)

O

b)

Ba

c)

Co

d)

K

37.

Fluorine has a smaller atomic radius than B because...

a)

F has more valence e- than B

b)

F has more shielding than B

c)

F has a larger atomic number than B

d)

F has a greater effective nuclear charge than B

38.
Which is the most electronegative?
Cl or Ar
a)
Cl
b)
Ar
39.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
40.

How many electrons can be held in the 2nd energy level (shell)?

a)

2

b)

6

c)

8

d)

18