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WorksheetsValence electrons, halogen and noble gases
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
Valence Electrons of Magnesium
a)
1
b)
2
c)
3
d)
4
2.
Valence electrons of Sodium
a)
1
b)
2
c)
3
d)
4
3.
Valence Electrons of Calcium
a)
1
b)
2
c)
3
d)
4
4.
True or False: Atoms that have a valence electrons of less than eight are not stable.
a)
true
b)
false
5.
Electrons occupying the outermost shell of an atom
a)
Ions
b)
Cation
c)
Valence Electrons
d)
Anion
6.
What group is the most reactive metals?
a)
2
b)
18
c)
1
d)
16
7.
Why are halogens so reactive?
a)
They want to get rid of their only valance electron
b)
They only need one more electron
c)
They are non reactive, they have a full shell
8.
Describe this element.
a)
Highly reactive metal
b)
Highly reactive nonmetal
c)
Stable
d)
Less stable non metal
9.
How many valence electrons does carbon have?
a)
4
b)
5
c)
6
d)
7
10.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
11.
Appear Vertically on the periodic table
a)
Periods
b)
Groups
12.
Elements that are similar in chemical reactivity
a)
Periods
b)
Groups
13.
Elements that appear horizontally on the periodic table
a)
Periods
b)
Groups
14.
Which of these is not a noble gas?
a)
Helium
b)
Argon
c)
Nitrogen
d)
Krypton
15.
In which group would you find the Noble Gases?
a)
5
b)
6
c)
7
d)
8
16.
Jenny asked her mum to buy a large balloon for her at the fair. When she got the balloon and let it go it floated up into the sky.
Why was this?
Why was this?
a)
the balloon was blown up by a strong wind
b)
the balloon contained helium gas
c)
the balloon contained carbon dioxide gas
17.
Fluorine, chlorine, bromine, and iodine are part of a family called
a)
metalloids.
b)
noble gases.
c)
alkali metals.
d)
halogens.
18.
Where are Halogens located on the periodic Table?
a)
Left Side
b)
Right Side
c)
Bottom
d)
Top
19.
Which two families on the periodic table react aggressively?
a)
noble gases and alkali metals
b)
alkali metals and halogens
c)
noble gases and halogens
d)
metals and halogens
20.
Which of the following is a halogen?
a)
Krypton
b)
Bromine
c)
Potassium
d)
Bismuth
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