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Worksheets

chapter 12 section

Total questions: 15

Worksheet time: 7mins

Name
Class
Date
1.
FIND THE ELECTRONIC CONFIGURATION OF Cl (At no = 17)
a)
2,8,7
b)
2,8,8
c)
2,8,6
d)
2,8
2.
Ar (18)
a)
2,8,7
b)
2,8,8
c)
2,8,6
d)
2,8,5
3.
Mg (12)
a)
2,8,2
b)
2,8,6
c)
2,6
d)
2,7
4.
Which is the first element in periodic table
a)
Hydrogen
b)
Chloriine
c)
Helium
d)
Boron
5.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
6.

What charge do electrons have?

a)

Positive

b)

Neutral

c)

Negative

7.

Which two particles are contained in the nucleus of an atom?

a)

Protons and Neutrons

b)

Protons and Electrons

c)

Electrons and Neutrons

8.

How many valence electrons does Hydrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

9.

How many valence electrons does Helium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

10.

How many valence electrons does Nitrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

11.

How many valence electrons does Neon Have?

a)

4 Valence electron

b)

5 Valence electron

c)

6 Valence electron

d)

7 Valence electron

e)

8 Valence electron

12.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom. 
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
13.

How many valence electrons?

a)

2

b)

3

c)

4

d)

5

14.

Most elements bond to create compounds because

a)

their outer electron level is full

b)

they are unstable

c)

they are positively charged

15.

electron in the outermost shell of an atom

a)

molecule

b)

reactant

c)

product

d)

valence electron