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WorksheetsQuiz #6- The Per. Table -Noble Gases
Total questions: 19
Worksheet time: 10mins
With the exception of Helium, noble gases have ____ valence electrons.
2
4
6
8
Helium has____ valence electrons.
2
4
6
8
Noble gases are colorless gases that are extremely ______.
rare
unreactive
dangerous
Noble gases are inactive because their outermost energy level is ______.
full
closed
empty
Noble gases are called _____ because they do not combine with other elements in nature.
rare
unert
inert
The noble gases are found in small amount in earth's ____.
crust
water
atmosphere
soil
Helium's atomic number is ______.
2
4
6
8
Neon's atomic number is ______.
4
6
8
10
Argon's atomic number is ______.
4
8
16
18
Krypton's atomic number is ______.
6
36
18
10
Xenon's atomic number is ______.
18
36
54
86
Radon's atomic number is ______.
18
86
54
36
The symbol for Radon is ____.
R
Rd
Rn
The symbol for Xenon is ____.
X
Xn
Xo
Xe
The symbol for Helium is ____.
H
He
Hm
The symbol for Neon is ____.
Ne
N
Nn
No
The symbol for Argon is ____.
A
Ag
Ar
An
The symbol for Krypton is ____.
K
Kp
Kt
Kr
Noble gases have a full outermost valence shell.
True
False
