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Worksheets

Valence Electrons, Ions & Periodic Trends

Total questions: 23

Worksheet time: 12mins

Name
Class
Date
1.

How many valence electrons do group 1 (1A) elements have?

a)

1

b)

2

c)

4

d)

8

2.

How many valence electrons do group 2 (2A) elements have?

a)

1

b)

2

c)

4

d)

8

3.

How many valence electrons do group 13 (3A) elements have?

a)

1

b)

3

c)

8

d)

13

4.

How many valence electrons do group 14 (4A) elements have?

a)

2

b)

4

c)

8

d)

14

5.

How many valence electrons do group 15 (5A) elements have?

a)

2

b)

15

c)

8

d)

5

6.

How many valence electrons do group 16 (6A) elements have?

a)

6

b)

8

c)

16

d)

2

7.

How many valence electrons do group 17 (7A) elements have?

a)

2

b)

3

c)

7

d)

17

8.

How many valence electrons do MOST group 18 (8A) elements have?

a)

2

b)

8

c)

18

d)

20

9.

Which noble gas (group 18) has only 2 valence electrons?

a)

argon

b)

krypton

c)

helium

d)

neon

10.

Positive ions are formed when atoms...

a)

gain electrons.

b)

lose electrons.

c)

share electrons.

11.

Negative ions are formed when atoms...

a)

gain electrons.

b)

lose electrons.

c)

share electrons.

12.

Which group tends to form 1+ charged ions?

a)

1 (1A)

b)

2 (2A)

c)

11

d)

17 (7A)

13.

Which group tends to form 2+ charged ions?

a)

1 (1A)

b)

2 (2A)

c)

12

d)

16 (6A)

14.

Which group tends to form 3+ charged ions?

a)

1 (1A)

b)

3

c)

13 (3A)

d)

15 (5A)

15.

Which group tends to form 3- charged ions?

a)

1 (1A)

b)

3

c)

13 (3A)

d)

15 (5A)

16.

Which group tends to form 2- charged ions?

a)

1 (1A)

b)

2 (2A)

c)

12

d)

16 (6A)

17.

Which group tends to form 1- charged ions?

a)

1 (1A)

b)

2 (2A)

c)

11

d)

17 (7A)

18.

Going left to right across a period on the periodic table, atomic radius (size) tends to...

a)

increase

b)

decrease

c)

remain the same

19.

Going left to right across a period on the periodic table, electronegativity tends to...

a)

increase

b)

decrease

c)

remain the same

20.

Going top to bottom down a group, atomic size tends to...

a)

increase

b)

decrease

c)

remain the same

21.

Going top to bottom down a group, electronegativity tends to...

a)

increase

b)

decrease

c)

remain the same

22.

Which is bigger?

a)

sodium atom (Na)

b)

sodium ion (Na+)

23.

Which is bigger?

a)

fluorine atom (F)

b)

fluorine ion (F-)