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Positives and Negatives (Chapter 6.1 and 6.2)

Total questions: 21

Worksheet time: 21mins

Name
Class
Date
1.

Calculate the number of valence electrons in H2O.

a)

2

b)

4

c)

8

d)

10

2.

Calculate the number of valence electrons in CH3F.

a)

16

b)

12

c)

18

d)

14

3.

Calculate the number of valence electrons in SiH4.

a)

8

b)

6

c)

4

d)

2

4.

Calculate the number of valence electrons in O2.

a)

24

b)

20

c)

16

d)

12

5.

Calculate the number of valence electrons in NO.

a)

11

b)

9

c)

15

d)

13

6.

Calculate the number of valence electrons in BBr3.

a)

12

b)

24

c)

72

d)

110

7.

Calculate the number of valence electrons in H2.

a)

2

b)

4

c)

6

d)

8

8.

Calculate the number of valence electrons in Cl2.

a)

6

b)

14

c)

28

d)

34

9.

Calculate the number of valence electrons in PF5

a)

110

b)

66

c)

40

d)

18

10.

Calculate the number of valence electrons in CO2.

a)

8

b)

16

c)

22

d)

34

11.

Calculate the number of valence electrons in PH3.

a)

30

b)

18

c)

8

d)

2

12.

Calculate the number of valence electrons in BrCN.

a)

1

b)

2

c)

4

d)

16

13.

Calculate the number of valence electrons in N2.

a)

14

b)

12

c)

10

d)

8

14.

Calculate the number of valence electrons in O3.

a)

24

b)

42

c)

36

d)

18

15.

Calculate the number of valence electrons in SO2.

a)

18

b)

32

c)

56

d)

74

16.

Which type of bond is the result of electrical attraction between a cation and an anion.

a)

covalent bond

b)

hydrogen bond

c)

ionic bond

d)

metallic bond

17.

Which type of bond results from the sharing of electrons between two atoms?

a)

covalent bond

b)

hydrogen bond

c)

ionic bond

d)

metallic bond

18.

A ___________ is a neutral group of atoms that are held together by covalent bonds.

a)

polyatomic ion

b)

cation

c)

formula

d)

molecule

19.

When one pair of electrons is shared between two atoms it is known as a __________ bond.

a)

single

b)

double

c)

triple

d)

electrical

20.

When three pair of electrons is shared between two atoms it is known as a __________ bond.

a)

single

b)

double

c)

triple

d)

electrical

21.

When two pair of electrons is shared between two atoms it is known as a __________ bond.

a)

single

b)

double

c)

triple

d)

electrical